66414368 has 24 divisors (see below), whose sum is σ = 132054300. Its totient is φ = 32876800.

The previous prime is 66414347. The next prime is 66414373. The reversal of 66414368 is 86341466.

It can be written as a sum of positive squares in 2 ways, for example, as 44249104 + 22165264 = 6652^2 + 4708^2 .

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, 7043 + ... + 13506.

Almost surely, 2^66414368 is an apocalyptic number.

It is an amenable number.

66414368 is a deficient number, since it is larger than the sum of its proper divisors (65639932).

66414368 is a wasteful number, since it uses less digits than its factorization.

66414368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20660 (or 20652 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 66414368 is about 8149.5010890238. The cubic root of 66414368 is about 404.9679759264.

The spelling of 66414368 in words is "sixty-six million, four hundred fourteen thousand, three hundred sixty-eight".