66580460 has 12 divisors (see below), whose sum is σ = 139819008. Its totient is φ = 26632176.

The previous prime is 66580411. The next prime is 66580477. The reversal of 66580460 is 6408566.

It is a self number, because there is not a number n which added to its sum of digits gives 66580460.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664492 + ... + 1664531.

It is an arithmetic number, because the mean of its divisors is an integer number (11651584).

Almost surely, 2^66580460 is an apocalyptic number.

It is an amenable number.

66580460 is an abundant number, since it is smaller than the sum of its proper divisors (73238548).

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

66580460 is a wasteful number, since it uses less digits than its factorization.

66580460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329032 (or 3329030 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 66580460 is about 8159.6850429413. The cubic root of 66580460 is about 405.3052821967.

The spelling of 66580460 in words is "sixty-six million, five hundred eighty thousand, four hundred sixty".