66045572 has 12 divisors (see below), whose sum is σ = 116412240. Its totient is φ = 32784936.

The previous prime is 66045563. The next prime is 66045599. The reversal of 66045572 is 27554066.

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, 58838 + ... + 59949.

It is an arithmetic number, because the mean of its divisors is an integer number (9701020).

Almost surely, 2^66045572 is an apocalyptic number.

It is an amenable number.

66045572 is a deficient number, since it is larger than the sum of its proper divisors (50366668).

66045572 is a wasteful number, since it uses less digits than its factorization.

66045572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118930 (or 118928 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 66045572 is about 8126.8426833550. The cubic root of 66045572 is about 404.2169944957.

The spelling of 66045572 in words is "sixty-six million, forty-five thousand, five hundred seventy-two".