66316315 has 16 divisors (see below), whose sum is σ = 85881600. Its totient is φ = 48868992.

The previous prime is 66316309. The next prime is 66316319. The reversal of 66316315 is 51361366.

It is a cyclic number.

It is not a de Polignac number, because 66316315 - 2²¹ = 64219163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66316319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45366 + ... + 46804.

It is an arithmetic number, because the mean of its divisors is an integer number (5367600).

Almost surely, 2^66316315 is an apocalyptic number.

66316315 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66316315 is a deficient number, since it is larger than the sum of its proper divisors (19565285).

66316315 is a wasteful number, since it uses less digits than its factorization.

66316315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its digits is 9720, while the sum is 31.

The square root of 66316315 is about 8143.4829772033. The cubic root of 66316315 is about 404.7685819111.

The spelling of 66316315 in words is "sixty-six million, three hundred sixteen thousand, three hundred fifteen".