652021604 has 36 divisors (see below), whose sum is σ = 1308264804. Its totient is φ = 283226112.

The previous prime is 652021597. The next prime is 652021627. The reversal of 652021604 is 406120256.

It can be written as a sum of positive squares in 6 ways, for example, as 25020004 + 627001600 = 5002^2 + 25040^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16877 + ... + 39860.

It is an arithmetic number, because the mean of its divisors is an integer number (36340689).

Almost surely, 2^652021604 is an apocalyptic number.

It is an amenable number.

652021604 is an abundant number, since it is smaller than the sum of its proper divisors (656243200).

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

652021604 is a wasteful number, since it uses less digits than its factorization.

652021604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56784 (or 56769 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 652021604 is about 25534.7137050722. The cubic root of 652021604 is about 867.1362233278.

The spelling of 652021604 in words is "six hundred fifty-two million, twenty-one thousand, six hundred four".