66164450 has 24 divisors (see below), whose sum is σ = 134254800. Its totient is φ = 24059600.

The previous prime is 66164437. The next prime is 66164489. The reversal of 66164450 is 5446166.

It is a hoax number, since the sum of its digits (32) 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 11 ways as a sum of consecutive naturals, for example, 59600 + ... + 60699.

It is an arithmetic number, because the mean of its divisors is an integer number (5593950).

Almost surely, 2^66164450 is an apocalyptic number.

66164450 is an abundant number, since it is smaller than the sum of its proper divisors (68090350).

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

66164450 is a wasteful number, since it uses less digits than its factorization.

66164450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120322 (or 120317 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66164450 is about 8134.1533056613. The cubic root of 66164450 is about 404.4593711087.

The spelling of 66164450 in words is "sixty-six million, one hundred sixty-four thousand, four hundred fifty".