3257687673 has 32 divisors (see below), whose sum is σ = 4891752320. Its totient is φ = 2142443520.

The previous prime is 3257687663. The next prime is 3257687689. The reversal of 3257687673 is 3767867523.

3257687673 is a `hidden beast` number, since 3 + 2 + 576 + 8 + 7 + 67 + 3 = 666.

3257687673 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3257687673 - 2⁸ = 3257687417 is a prime.

It is a super-2 number, since 2×3257687673² = 21225057949632309858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3257687623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880758 + ... + 884448.

It is an arithmetic number, because the mean of its divisors is an integer number (152867260).

Almost surely, 2^3257687673 is an apocalyptic number.

It is an amenable number.

3257687673 is a deficient number, since it is larger than the sum of its proper divisors (1634064647).

3257687673 is a wasteful number, since it uses less digits than its factorization.

3257687673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134 (or 4128 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The square root of 3257687673 is about 57076.1567819698. The cubic root of 3257687673 is about 1482.4150479072.

The spelling of 3257687673 in words is "three billion, two hundred fifty-seven million, six hundred eighty-seven thousand, six hundred seventy-three".