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6604630021 = 1123434712917
BaseRepresentation
bin1100010011010101…
…01010100000000101
3122001021202222010201
412021222222200011
5102011241130041
63011212050501
7322445300053
oct61152524005
918037688121
106604630021
11288a161320
121343a63a31
13813425c02
1446923d1d3
15289c6c631
hex189aaa805

6604630021 has 32 divisors (see below), whose sum is σ = 7857451008. Its totient is φ = 5489816640.

The previous prime is 6604630009. The next prime is 6604630037. The reversal of 6604630021 is 1200364066.

It is not a de Polignac number, because 6604630021 - 215 = 6604597253 is a prime.

It is a super-2 number, since 2×66046300212 = 87242275428588920882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6604630091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504855 + ... + 517771.

It is an arithmetic number, because the mean of its divisors is an integer number (245545344).

Almost surely, 26604630021 is an apocalyptic number.

It is an amenable number.

6604630021 is a deficient number, since it is larger than the sum of its proper divisors (1252820987).

6604630021 is a wasteful number, since it uses less digits than its factorization.

6604630021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13041.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6604630021 is about 81268.8748599364. The cubic root of 6604630021 is about 1876.2159835958.

Adding to 6604630021 its reverse (1200364066), we get a palindrome (7804994087).

The spelling of 6604630021 in words is "six billion, six hundred four million, six hundred thirty thousand, twenty-one".

Divisors: 1 11 23 43 47 253 473 517 989 1081 2021 10879 11891 12917 22231 46483 142087 297091 511313 555431 607099 3268001 6109741 6678089 12774913 13963277 26105257 140524043 153596047 287157827 600420911 6604630021