666040315 has 16 divisors (see below), whose sum is σ = 812724192. Its totient is φ = 523920384.

The previous prime is 666040289. The next prime is 666040339. The reversal of 666040315 is 513040666.

It is a cyclic number.

It is not a de Polignac number, because 666040315 - 2¹¹ = 666038267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71772 + ... + 80518.

It is an arithmetic number, because the mean of its divisors is an integer number (50795262).

Almost surely, 2^666040315 is an apocalyptic number.

666040315 is a deficient number, since it is larger than the sum of its proper divisors (146683877).

666040315 is a wasteful number, since it uses less digits than its factorization.

666040315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 666040315 is about 25807.7568765672. The cubic root of 666040315 is about 873.3067947215.

The spelling of 666040315 in words is "six hundred sixty-six million, forty thousand, three hundred fifteen".