66374564 has 12 divisors (see below), whose sum is σ = 116828124. Its totient is φ = 32995104.

The previous prime is 66374557. The next prime is 66374597. The reversal of 66374564 is 46547366.

It can be written as a sum of positive squares in 2 ways, for example, as 51008164 + 15366400 = 7142^2 + 3920^2 .

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, 47267 + ... + 48650.

It is an arithmetic number, because the mean of its divisors is an integer number (9735677).

Almost surely, 2^66374564 is an apocalyptic number.

It is an amenable number.

66374564 is a deficient number, since it is larger than the sum of its proper divisors (50453560).

66374564 is a wasteful number, since it uses less digits than its factorization.

66374564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96094 (or 96092 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 66374564 is about 8147.0586103207. The cubic root of 66374564 is about 404.8870568566.

The spelling of 66374564 in words is "sixty-six million, three hundred seventy-four thousand, five hundred sixty-four".