652816656 has 30 divisors (see below), whose sum is σ = 1826980350. Its totient is φ = 217605504.

The previous prime is 652816607. The next prime is 652816721. The reversal of 652816656 is 656618256.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 483296256 + 169520400 = 21984^2 + 13020^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2266581 + ... + 2266868.

It is an arithmetic number, because the mean of its divisors is an integer number (60899345).

Almost surely, 2^652816656 is an apocalyptic number.

It is an amenable number.

652816656 is an abundant number, since it is smaller than the sum of its proper divisors (1174163694).

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

652816656 is a wasteful number, since it uses less digits than its factorization.

652816656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533463 (or 4533454 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 652816656 is about 25550.2770239385. The cubic root of 652816656 is about 867.4885318795.

The spelling of 652816656 in words is "six hundred fifty-two million, eight hundred sixteen thousand, six hundred fifty-six".