655364816 has 10 divisors (see below), whose sum is σ = 1269769362. Its totient is φ = 327682400.

The previous prime is 655364813. The next prime is 655364833. The reversal of 655364816 is 618463556.

It can be written as a sum of positive squares in only one way, i.e., 327754816 + 327610000 = 18104^2 + 18100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655364813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20480135 + ... + 20480166.

Almost surely, 2^655364816 is an apocalyptic number.

It is an amenable number.

655364816 is a deficient number, since it is larger than the sum of its proper divisors (614404546).

655364816 is a wasteful number, since it uses less digits than its factorization.

655364816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40960309 (or 40960303 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 655364816 is about 25600.0940623272. The cubic root of 655364816 is about 868.6157650127.

The spelling of 655364816 in words is "six hundred fifty-five million, three hundred sixty-four thousand, eight hundred sixteen".