3257646456 has 16 divisors (see below), whose sum is σ = 8144116200. Its totient is φ = 1085882144.

The previous prime is 3257646409. The next prime is 3257646461. The reversal of 3257646456 is 6546467523.

It is a super-2 number, since 2×3257646456² = 21224520864578719872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67867611 + ... + 67867658.

Almost surely, 2^3257646456 is an apocalyptic number.

It is an amenable number.

3257646456 is an abundant number, since it is smaller than the sum of its proper divisors (4886469744).

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

3257646456 is a wasteful number, since it uses less digits than its factorization.

3257646456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135735278 (or 135735274 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 48.

The square root of 3257646456 is about 57075.7957106162. The cubic root of 3257646456 is about 1482.4087959309.

The spelling of 3257646456 in words is "three billion, two hundred fifty-seven million, six hundred forty-six thousand, four hundred fifty-six".