3257662681 has 16 divisors (see below), whose sum is σ = 4010852608. Its totient is φ = 2576577600.

The previous prime is 3257662663. The next prime is 3257662687. The reversal of 3257662681 is 1862667523.

It is a cyclic number.

It is not a de Polignac number, because 3257662681 - 2⁹ = 3257662169 is a prime.

It is a super-2 number, since 2×3257662681² = 21224732286360215522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3257662687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380791 + ... + 389251.

It is an arithmetic number, because the mean of its divisors is an integer number (250678288).

Almost surely, 2^3257662681 is an apocalyptic number.

It is an amenable number.

3257662681 is a deficient number, since it is larger than the sum of its proper divisors (753189927).

3257662681 is a wasteful number, since it uses less digits than its factorization.

3257662681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12712.

The product of its digits is 725760, while the sum is 46.

The square root of 3257662681 is about 57075.9378459960. The cubic root of 3257662681 is about 1482.4112570167.

The spelling of 3257662681 in words is "three billion, two hundred fifty-seven million, six hundred sixty-two thousand, six hundred eighty-one".