3639231687 has 32 divisors (see below), whose sum is σ = 6073320960. Its totient is φ = 1887050880.

The previous prime is 3639231653. The next prime is 3639231689. The reversal of 3639231687 is 7861329363.

3639231687 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 3639231687 - 2⁷ = 3639231559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639231689) 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, 96864 + ... + 129077.

It is an arithmetic number, because the mean of its divisors is an integer number (189791280).

Almost surely, 2^3639231687 is an apocalyptic number.

3639231687 is a deficient number, since it is larger than the sum of its proper divisors (2434089273).

3639231687 is a wasteful number, since it uses less digits than its factorization.

3639231687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226023.

The product of its digits is 979776, while the sum is 48.

The square root of 3639231687 is about 60326.0448479759. The cubic root of 3639231687 is about 1538.1660981619.

The spelling of 3639231687 in words is "three billion, six hundred thirty-nine million, two hundred thirty-one thousand, six hundred eighty-seven".