66512316 has 36 divisors (see below), whose sum is σ = 168056952. Its totient is φ = 20464704.

The previous prime is 66512311. The next prime is 66512323. The reversal of 66512316 is 61321566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66512311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14371 + ... + 18426.

Almost surely, 2^66512316 is an apocalyptic number.

It is an amenable number.

66512316 is an abundant number, since it is smaller than the sum of its proper divisors (101544636).

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

66512316 is a wasteful number, since it uses less digits than its factorization.

66512316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32830 (or 32815 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 66512316 is about 8155.5083226001. The cubic root of 66512316 is about 405.1669605776.

The spelling of 66512316 in words is "sixty-six million, five hundred twelve thousand, three hundred sixteen".