537686604 has 108 divisors (see below), whose sum is σ = 1702746864. Its totient is φ = 141801408.

The previous prime is 537686603. The next prime is 537686641. The reversal of 537686604 is 406686735.

537686604 is a `hidden beast` number, since 5 + 37 + 6 + 8 + 6 + 604 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 537686604.

It is not an unprimeable number, because it can be changed into a prime (537686603) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11209 + ... + 34655.

Almost surely, 2^537686604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537686604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851373432).

537686604 is an abundant number, since it is smaller than the sum of its proper divisors (1165060260).

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

537686604 is a wasteful number, since it uses less digits than its factorization.

537686604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23484 (or 23472 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 537686604 is about 23188.0702948736. The cubic root of 537686604 is about 813.1607458010.

The spelling of 537686604 in words is "five hundred thirty-seven million, six hundred eighty-six thousand, six hundred four".