66413312 has 36 divisors (see below), whose sum is σ = 151509456. Its totient is φ = 28462080.

The previous prime is 66413299. The next prime is 66413357. The reversal of 66413312 is 21331466.

It is a hoax number, since the sum of its digits (26) 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 3 ways as a sum of consecutive naturals, for example, 16739 + ... + 20322.

It is an arithmetic number, because the mean of its divisors is an integer number (4208596).

Almost surely, 2^66413312 is an apocalyptic number.

It is an amenable number.

66413312 is an abundant number, since it is smaller than the sum of its proper divisors (85096144).

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

66413312 is an equidigital number, since it uses as much as digits as its factorization.

66413312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37084 (or 37070 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 66413312 is about 8149.4362995240. The cubic root of 66413312 is about 404.9658295613.

Adding to 66413312 its reverse (21331466), we get a palindrome (87744778).

The spelling of 66413312 in words is "sixty-six million, four hundred thirteen thousand, three hundred twelve".