660084140 has 24 divisors (see below), whose sum is σ = 1386776160. Its totient is φ = 263919488.

The previous prime is 660084091. The next prime is 660084163. The reversal of 660084140 is 41480066.

It is a super-2 number, since 2×660084140² = 871422143759079200, which contains 22 as substring.

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, 52376 + ... + 63744.

It is an arithmetic number, because the mean of its divisors is an integer number (57782340).

Almost surely, 2^660084140 is an apocalyptic number.

It is an amenable number.

660084140 is an abundant number, since it is smaller than the sum of its proper divisors (726692020).

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

660084140 is a wasteful number, since it uses less digits than its factorization.

660084140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14281 (or 14279 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 660084140 is about 25692.1026776712. The cubic root of 660084140 is about 870.6957661456.

The spelling of 660084140 in words is "six hundred sixty million, eighty-four thousand, one hundred forty".