66433808 has 30 divisors (see below), whose sum is σ = 149732046. Its totient is φ = 28471296.

The previous prime is 66433793. The next prime is 66433813. The reversal of 66433808 is 80833466.

It can be written as a sum of positive squares in only one way, i.e., 61905424 + 4528384 = 7868^2 + 2128^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41585 + ... + 43152.

Almost surely, 2^66433808 is an apocalyptic number.

It is an amenable number.

66433808 is an abundant number, since it is smaller than the sum of its proper divisors (83298238).

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

66433808 is a wasteful number, since it uses less digits than its factorization.

66433808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84759 (or 84746 counting only the distinct ones).

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

The square root of 66433808 is about 8150.6937128075. The cubic root of 66433808 is about 405.0074844931.

The spelling of 66433808 in words is "sixty-six million, four hundred thirty-three thousand, eight hundred eight".