66412308 has 12 divisors (see below), whose sum is σ = 154962080. Its totient is φ = 22137432.

The previous prime is 66412301. The next prime is 66412309. The reversal of 66412308 is 80321466.

66412308 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

66412308 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767168 + ... + 2767191.

Almost surely, 2^66412308 is an apocalyptic number.

It is an amenable number.

66412308 is an abundant number, since it is smaller than the sum of its proper divisors (88549772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66412308 is a wasteful number, since it uses less digits than its factorization.

66412308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534366 (or 5534364 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 66412308 is about 8149.3746999386. The cubic root of 66412308 is about 404.9637888673.

The spelling of 66412308 in words is "sixty-six million, four hundred twelve thousand, three hundred eight".