660488570 has 16 divisors (see below), whose sum is σ = 1358719488. Its totient is φ = 226453200.

The previous prime is 660488561. The next prime is 660488579. The reversal of 660488570 is 75884066.

It is an interprime number because it is at equal distance from previous prime (660488561) and next prime (660488579).

It is a super-2 number, since 2×660488570² = 872490302201289800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (660488579) 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, 4717706 + ... + 4717845.

It is an arithmetic number, because the mean of its divisors is an integer number (84919968).

Almost surely, 2^660488570 is an apocalyptic number.

660488570 is an abundant number, since it is smaller than the sum of its proper divisors (698230918).

660488570 is a wasteful number, since it uses less digits than its factorization.

660488570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9435565.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 660488570 is about 25699.9721789733. The cubic root of 660488570 is about 870.8735533774.

The spelling of 660488570 in words is "six hundred sixty million, four hundred eighty-eight thousand, five hundred seventy".