655377872 has 10 divisors (see below), whose sum is σ = 1269794658. Its totient is φ = 327688928.

The previous prime is 655377809. The next prime is 655377937. The reversal of 655377872 is 278773556.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 640292416 + 15085456 = 25304^2 + 3884^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 655377872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20480543 + ... + 20480574.

Almost surely, 2^655377872 is an apocalyptic number.

It is an amenable number.

655377872 is a deficient number, since it is larger than the sum of its proper divisors (614416786).

655377872 is a wasteful number, since it uses less digits than its factorization.

655377872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40961125 (or 40961119 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 50.

The square root of 655377872 is about 25600.3490601203. The cubic root of 655377872 is about 868.6215330836.

The spelling of 655377872 in words is "six hundred fifty-five million, three hundred seventy-seven thousand, eight hundred seventy-two".