660570560 has 56 divisors (see below), whose sum is σ = 1693993056. Its totient is φ = 243901440.

The previous prime is 660570539. The next prime is 660570563. The reversal of 660570560 is 65075066.

It is a self number, because there is not a number n which added to its sum of digits gives 660570560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660570563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75236 + ... + 83555.

It is an arithmetic number, because the mean of its divisors is an integer number (30249876).

Almost surely, 2^660570560 is an apocalyptic number.

It is an amenable number.

660570560 is an abundant number, since it is smaller than the sum of its proper divisors (1033422496).

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

660570560 is a wasteful number, since it uses less digits than its factorization.

660570560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158821 (or 158811 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 660570560 is about 25701.5672673866. The cubic root of 660570560 is about 870.9095872931.

The spelling of 660570560 in words is "six hundred sixty million, five hundred seventy thousand, five hundred sixty".