660985170 has 16 divisors (see below), whose sum is σ = 1586364480. Its totient is φ = 176262704.

The previous prime is 660985159. The next prime is 660985181. The reversal of 660985170 is 71589066.

It is an interprime number because it is at equal distance from previous prime (660985159) and next prime (660985181).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11016390 + ... + 11016449.

It is an arithmetic number, because the mean of its divisors is an integer number (99147780).

Almost surely, 2^660985170 is an apocalyptic number.

660985170 is an abundant number, since it is smaller than the sum of its proper divisors (925379310).

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

660985170 is a wasteful number, since it uses less digits than its factorization.

660985170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22032849.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 660985170 is about 25709.6318526734. The cubic root of 660985170 is about 871.0917592548.

The spelling of 660985170 in words is "six hundred sixty million, nine hundred eighty-five thousand, one hundred seventy".