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6668329761 = 32740925529
BaseRepresentation
bin1100011010111011…
…01010001100100001
3122012201122020202100
412031131222030201
5102124043023021
63021405241013
7324150603432
oct61535521441
918181566670
106668329761
112912109935
121361263169
13823699b72
144738a1489
15290651626
hex18d76a321

6668329761 has 6 divisors (see below), whose sum is σ = 9632031890. Its totient is φ = 4445553168.

The previous prime is 6668329739. The next prime is 6668329771. The reversal of 6668329761 is 1679238666.

It can be written as a sum of positive squares in only one way, i.e., 5547419361 + 1120910400 = 74481^2 + 33480^2 .

It is not a de Polignac number, because 6668329761 - 211 = 6668327713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6668329698 and 6668329707.

It is not an unprimeable number, because it can be changed into a prime (6668329721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370462756 + ... + 370462773.

Almost surely, 26668329761 is an apocalyptic number.

It is an amenable number.

6668329761 is a deficient number, since it is larger than the sum of its proper divisors (2963702129).

6668329761 is a wasteful number, since it uses less digits than its factorization.

6668329761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740925535 (or 740925532 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 6668329761 is about 81659.8417889724. The cubic root of 6668329761 is about 1882.2285479186.

The spelling of 6668329761 in words is "six billion, six hundred sixty-eight million, three hundred twenty-nine thousand, seven hundred sixty-one".

Divisors: 1 3 9 740925529 2222776587 6668329761