66306408 has 48 divisors (see below), whose sum is σ = 192833280. Its totient is φ = 18944352.

The previous prime is 66306397. The next prime is 66306421. The reversal of 66306408 is 80460366.

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, 27016 + ... + 29367.

It is an arithmetic number, because the mean of its divisors is an integer number (4017360).

Almost surely, 2^66306408 is an apocalyptic number.

It is an amenable number.

66306408 is an abundant number, since it is smaller than the sum of its proper divisors (126526872).

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

66306408 is a wasteful number, since it uses less digits than its factorization.

66306408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56406 (or 56395 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 66306408 is about 8142.8746766729. The cubic root of 66306408 is about 404.7484247695.

The spelling of 66306408 in words is "sixty-six million, three hundred six thousand, four hundred eight".