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6664864216 = 232928727863
BaseRepresentation
bin1100011010100000…
…11100000111011000
3122012111010011220211
412031100130013120
5102122201123331
63021203100504
7324106261003
oct61520340730
918174104824
106664864216
11291016214a
121360071734
13822a5564a
1447323c53a
152901b98b1
hex18d41c1d8

6664864216 has 16 divisors (see below), whose sum is σ = 12927538800. Its totient is φ = 3217520544.

The previous prime is 6664864201. The next prime is 6664864223. The reversal of 6664864216 is 6124684666.

It is a self number, because there is not a number n which added to its sum of digits gives 6664864216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14363700 + ... + 14364163.

It is an arithmetic number, because the mean of its divisors is an integer number (807971175).

Almost surely, 26664864216 is an apocalyptic number.

It is an amenable number.

6664864216 is a deficient number, since it is larger than the sum of its proper divisors (6262674584).

6664864216 is a wasteful number, since it uses less digits than its factorization.

6664864216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28727898 (or 28727894 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The square root of 6664864216 is about 81638.6196355622. The cubic root of 6664864216 is about 1881.9024253717.

The spelling of 6664864216 in words is "six billion, six hundred sixty-four million, eight hundred sixty-four thousand, two hundred sixteen".

Divisors: 1 2 4 8 29 58 116 232 28727863 57455726 114911452 229822904 833108027 1666216054 3332432108 6664864216