66064372 has 48 divisors (see below), whose sum is σ = 133160832. Its totient is φ = 28385280.

The previous prime is 66064367. The next prime is 66064381. The reversal of 66064372 is 27346066.

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, 97828 + ... + 98500.

It is an arithmetic number, because the mean of its divisors is an integer number (2774184).

Almost surely, 2^66064372 is an apocalyptic number.

It is an amenable number.

66064372 is an abundant number, since it is smaller than the sum of its proper divisors (67096460).

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

66064372 is a wasteful number, since it uses less digits than its factorization.

66064372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 66064372 is about 8127.9992618110. Note that the first 3 decimals coincide. The cubic root of 66064372 is about 404.2553445739.

The spelling of 66064372 in words is "sixty-six million, sixty-four thousand, three hundred seventy-two".