Search a number
-
+
63689021 = 1117340583
BaseRepresentation
bin1111001011110…
…1000100111101
311102211201220122
43302331010331
5112301022041
610153024325
71402230164
oct362750475
9142751818
1063689021
1132a50560
12193b50a5
131026c116
14865c3db
1558d0c4b
hex3cbd13d

63689021 has 8 divisors (see below), whose sum is σ = 73566144. Its totient is φ = 54493120.

The previous prime is 63689009. The next prime is 63689029. The reversal of 63689021 is 12098636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63689021 - 210 = 63687997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63689029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170105 + ... + 170478.

It is an arithmetic number, because the mean of its divisors is an integer number (9195768).

Almost surely, 263689021 is an apocalyptic number.

It is an amenable number.

63689021 is a deficient number, since it is larger than the sum of its proper divisors (9877123).

63689021 is a wasteful number, since it uses less digits than its factorization.

63689021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340611.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 63689021 is about 7980.5401446268. The cubic root of 63689021 is about 399.3510748931.

The spelling of 63689021 in words is "sixty-three million, six hundred eighty-nine thousand, twenty-one".

Divisors: 1 11 17 187 340583 3746413 5789911 63689021