655556920 has 16 divisors (see below), whose sum is σ = 1475003160. Its totient is φ = 262222752.

The previous prime is 655556899. The next prime is 655556921. The reversal of 655556920 is 29655556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655556921) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8194422 + ... + 8194501.

Almost surely, 2^655556920 is an apocalyptic number.

It is an amenable number.

655556920 is an abundant number, since it is smaller than the sum of its proper divisors (819446240).

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

655556920 is a wasteful number, since it uses less digits than its factorization.

655556920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16388934 (or 16388930 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 43.

The square root of 655556920 is about 25603.8458048786. The cubic root of 655556920 is about 868.7006278033.

The spelling of 655556920 in words is "six hundred fifty-five million, five hundred fifty-six thousand, nine hundred twenty".