3216656507 has 4 divisors (see below), whose sum is σ = 3236390760. Its totient is φ = 3196922256.

The previous prime is 3216656501. The next prime is 3216656519. The reversal of 3216656507 is 7056566123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3216656507 - 2⁸ = 3216656251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3216656501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9866882 + ... + 9867207.

It is an arithmetic number, because the mean of its divisors is an integer number (809097690).

Almost surely, 2^3216656507 is an apocalyptic number.

3216656507 is a deficient number, since it is larger than the sum of its proper divisors (19734253).

3216656507 is a wasteful number, since it uses less digits than its factorization.

3216656507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19734252.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 3216656507 is about 56715.5755238365. The cubic root of 3216656507 is about 1476.1649717498.

The spelling of 3216656507 in words is "three billion, two hundred sixteen million, six hundred fifty-six thousand, five hundred seven".