652811904 has 48 divisors (see below), whose sum is σ = 1878537570. Its totient is φ = 217603584.

The previous prime is 652811897. The next prime is 652811909. The reversal of 652811904 is 409118256.

It can be written as a sum of positive squares in only one way, i.e., 492840000 + 159971904 = 22200^2 + 12648^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (652811909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282187 + ... + 284490.

Almost surely, 2^652811904 is an apocalyptic number.

652811904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

652811904 is an abundant number, since it is smaller than the sum of its proper divisors (1225725666).

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

652811904 is a wasteful number, since it uses less digits than its factorization.

652811904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566697 (or 566682 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 652811904 is about 25550.1840306484. The cubic root of 652811904 is about 867.4864269927.

The spelling of 652811904 in words is "six hundred fifty-two million, eight hundred eleven thousand, nine hundred four".