655508872 has 32 divisors (see below), whose sum is σ = 1265400000. Its totient is φ = 318112704.

The previous prime is 655508869. The next prime is 655508879. The reversal of 655508872 is 278805556.

It is not an unprimeable number, because it can be changed into a prime (655508879) 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 7 ways as a sum of consecutive naturals, for example, 128629 + ... + 133627.

It is an arithmetic number, because the mean of its divisors is an integer number (39543750).

Almost surely, 2^655508872 is an apocalyptic number.

It is an amenable number.

655508872 is a deficient number, since it is larger than the sum of its proper divisors (609891128).

655508872 is a wasteful number, since it uses less digits than its factorization.

655508872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5485 (or 5481 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 46.

The square root of 655508872 is about 25602.9074911425. The cubic root of 655508872 is about 868.6794039420.

The spelling of 655508872 in words is "six hundred fifty-five million, five hundred eight thousand, eight hundred seventy-two".