656043552 has 72 divisors (see below), whose sum is σ = 1963830960. Its totient is φ = 207169920.

The previous prime is 656043547. The next prime is 656043589. The reversal of 656043552 is 255340656.

It is a happy number.

656043552 is a `hidden beast` number, since 6 + 5 + 60 + 43 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54474 + ... + 65417.

It is an arithmetic number, because the mean of its divisors is an integer number (27275430).

Almost surely, 2^656043552 is an apocalyptic number.

It is an amenable number.

656043552 is an abundant number, since it is smaller than the sum of its proper divisors (1307787408).

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

656043552 is a wasteful number, since it uses less digits than its factorization.

656043552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119926 (or 119915 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 656043552 is about 25613.3471455802. The cubic root of 656043552 is about 868.9155254739.

The spelling of 656043552 in words is "six hundred fifty-six million, forty-three thousand, five hundred fifty-two".