66412408 has 48 divisors (see below), whose sum is σ = 133464240. Its totient is φ = 30919680.

The previous prime is 66412397. The next prime is 66412433. The reversal of 66412408 is 80421466.

It is a self number, because there is not a number n which added to its sum of digits gives 66412408.

It is a congruent number.

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, 684616 + ... + 684712.

It is an arithmetic number, because the mean of its divisors is an integer number (2780505).

Almost surely, 2^66412408 is an apocalyptic number.

It is an amenable number.

66412408 is an abundant number, since it is smaller than the sum of its proper divisors (67051832).

66412408 is a wasteful number, since it uses less digits than its factorization.

66412408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 66412408 is about 8149.3808353764. The cubic root of 66412408 is about 404.9639921246.

The spelling of 66412408 in words is "sixty-six million, four hundred twelve thousand, four hundred eight".