66312052 has 24 divisors (see below), whose sum is σ = 122522400. Its totient is φ = 31316256.

The previous prime is 66312041. The next prime is 66312079. The reversal of 66312052 is 25021366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28443 + ... + 30685.

It is an arithmetic number, because the mean of its divisors is an integer number (5105100).

Almost surely, 2^66312052 is an apocalyptic number.

It is an amenable number.

66312052 is a deficient number, since it is larger than the sum of its proper divisors (56210348).

66312052 is a wasteful number, since it uses less digits than its factorization.

66312052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 66312052 is about 8143.2212299556. The cubic root of 66312052 is about 404.7599085027.

The spelling of 66312052 in words is "sixty-six million, three hundred twelve thousand, fifty-two".