166315797 has 24 divisors (see below), whose sum is σ = 255226400. Its totient is φ = 104066208.

The previous prime is 166315781. The next prime is 166315817. The reversal of 166315797 is 797513661.

166315797 is a `hidden beast` number, since 1 + 6 + 631 + 5 + 7 + 9 + 7 = 666.

It is not a de Polignac number, because 166315797 - 2⁴ = 166315781 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166315727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14178 + ... + 23100.

Almost surely, 2^166315797 is an apocalyptic number.

It is an amenable number.

166315797 is a deficient number, since it is larger than the sum of its proper divisors (88910603).

166315797 is a wasteful number, since it uses less digits than its factorization.

166315797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9057 (or 9054 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 166315797 is about 12896.3482040460. The cubic root of 166315797 is about 549.9347547949.

The spelling of 166315797 in words is "one hundred sixty-six million, three hundred fifteen thousand, seven hundred ninety-seven".