3687524921 has 4 divisors (see below), whose sum is σ = 3881605200. Its totient is φ = 3493444644.

The previous prime is 3687524857. The next prime is 3687524987. The reversal of 3687524921 is 1294257863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3687524921 - 2⁶ = 3687524857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3687524521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97040111 + ... + 97040148.

It is an arithmetic number, because the mean of its divisors is an integer number (970401300).

Almost surely, 2^3687524921 is an apocalyptic number.

It is an amenable number.

3687524921 is a deficient number, since it is larger than the sum of its proper divisors (194080279).

3687524921 is a wasteful number, since it uses less digits than its factorization.

3687524921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194080278.

The product of its digits is 725760, while the sum is 47.

The square root of 3687524921 is about 60724.9942033756. The cubic root of 3687524921 is about 1544.9401318081.

The spelling of 3687524921 in words is "three billion, six hundred eighty-seven million, five hundred twenty-four thousand, nine hundred twenty-one".