166315607 has 16 divisors (see below), whose sum is σ = 185977440. Its totient is φ = 147806208.

The previous prime is 166315577. The next prime is 166315661. The reversal of 166315607 is 706513661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 166315607 - 2²⁰ = 165267031 is a prime.

It is a super-2 number, since 2×166315607² = 55321762263556898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166315697) 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, 127583 + ... + 128879.

It is an arithmetic number, because the mean of its divisors is an integer number (11623590).

Almost surely, 2^166315607 is an apocalyptic number.

166315607 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

166315607 is a deficient number, since it is larger than the sum of its proper divisors (19661833).

166315607 is a wasteful number, since it uses less digits than its factorization.

166315607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 166315607 is about 12896.3408376175. The cubic root of 166315607 is about 549.9345453787.

The spelling of 166315607 in words is "one hundred sixty-six million, three hundred fifteen thousand, six hundred seven".