66889324 has 12 divisors (see below), whose sum is σ = 117184144. Its totient is φ = 33408144.

The previous prime is 66889307. The next prime is 66889337. The reversal of 66889324 is 42398866.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 4779 + ... + 12514.

Almost surely, 2^66889324 is an apocalyptic number.

It is an amenable number.

66889324 is a deficient number, since it is larger than the sum of its proper divisors (50294820).

66889324 is a wasteful number, since it uses less digits than its factorization.

66889324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18264 (or 18262 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 66889324 is about 8178.5893649211. The cubic root of 66889324 is about 405.9310470393.

The spelling of 66889324 in words is "sixty-six million, eight hundred eighty-nine thousand, three hundred twenty-four".