660630140 has 48 divisors (see below), whose sum is σ = 1406486592. Its totient is φ = 260622336.

The previous prime is 660630101. The next prime is 660630163. The reversal of 660630140 is 41036066.

660630140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975482 + ... + 976158.

It is an arithmetic number, because the mean of its divisors is an integer number (29301804).

Almost surely, 2^660630140 is an apocalyptic number.

It is an amenable number.

660630140 is an abundant number, since it is smaller than the sum of its proper divisors (745856452).

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

660630140 is a wasteful number, since it uses less digits than its factorization.

660630140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 660630140 is about 25702.7263145371. The cubic root of 660630140 is about 870.9357703316.

The spelling of 660630140 in words is "six hundred sixty million, six hundred thirty thousand, one hundred forty".