3256640622 has 96 divisors (see below), whose sum is σ = 7679992320. Its totient is φ = 993997440.

The previous prime is 3256640593. The next prime is 3256640657. The reversal of 3256640622 is 2260466523.

3256640622 is a `hidden beast` number, since 3 + 2 + 5 + 6 + 640 + 6 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1332922 + ... + 1335362.

It is an arithmetic number, because the mean of its divisors is an integer number (79999920).

Almost surely, 2^3256640622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3256640622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3839996160).

3256640622 is an abundant number, since it is smaller than the sum of its proper divisors (4423351698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3256640622 is a wasteful number, since it uses less digits than its factorization.

3256640622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 3256640622 is about 57066.9836420325. The cubic root of 3256640622 is about 1482.2562102451.

The spelling of 3256640622 in words is "three billion, two hundred fifty-six million, six hundred forty thousand, six hundred twenty-two".