66359964 has 48 divisors (see below), whose sum is σ = 174375936. Its totient is φ = 19459200.

The previous prime is 66359957. The next prime is 66359977. The reversal of 66359964 is 46995366.

It is a happy number.

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, 4017 + ... + 12200.

It is an arithmetic number, because the mean of its divisors is an integer number (3632832).

Almost surely, 2^66359964 is an apocalyptic number.

It is an amenable number.

66359964 is an abundant number, since it is smaller than the sum of its proper divisors (108015972).

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

66359964 is a wasteful number, since it uses less digits than its factorization.

66359964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16266 (or 16264 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 48.

The square root of 66359964 is about 8146.1625321374. The cubic root of 66359964 is about 404.8573678505.

The spelling of 66359964 in words is "sixty-six million, three hundred fifty-nine thousand, nine hundred sixty-four".