66086730 has 48 divisors (see below), whose sum is σ = 177375744. Its totient is φ = 17053920.

The previous prime is 66086717. The next prime is 66086753. The reversal of 66086730 is 3768066.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9054 + ... + 14633.

It is an arithmetic number, because the mean of its divisors is an integer number (3695328).

Almost surely, 2^66086730 is an apocalyptic number.

66086730 is an abundant number, since it is smaller than the sum of its proper divisors (111289014).

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

66086730 is a wasteful number, since it uses less digits than its factorization.

66086730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23731 (or 23728 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 66086730 is about 8129.3745146844. The cubic root of 66086730 is about 404.3009431384.

The spelling of 66086730 in words is "sixty-six million, eighty-six thousand, seven hundred thirty".