66685060 has 48 divisors (see below), whose sum is σ = 158760000. Its totient is φ = 23324544.

The previous prime is 66685051. The next prime is 66685081. The reversal of 66685060 is 6058666.

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, 1810 + ... + 11689.

It is an arithmetic number, because the mean of its divisors is an integer number (3307500).

Almost surely, 2^66685060 is an apocalyptic number.

It is an amenable number.

66685060 is an abundant number, since it is smaller than the sum of its proper divisors (92074940).

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

66685060 is a wasteful number, since it uses less digits than its factorization.

66685060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13540 (or 13538 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 66685060 is about 8166.0920886309. The cubic root of 66685060 is about 405.5174202655.

The spelling of 66685060 in words is "sixty-six million, six hundred eighty-five thousand, sixty".