166715660 has 24 divisors (see below), whose sum is σ = 350345520. Its totient is φ = 66640064.

The previous prime is 166715641. The next prime is 166715669. The reversal of 166715660 is 66517661.

It is a super-2 number, since 2×166715660² = 55588222578471200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166715669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54902 + ... + 57858.

It is an arithmetic number, because the mean of its divisors is an integer number (14597730).

Almost surely, 2^166715660 is an apocalyptic number.

166715660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166715660 is an abundant number, since it is smaller than the sum of its proper divisors (183629860).

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

166715660 is a wasteful number, since it uses less digits than its factorization.

166715660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785 (or 5783 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 166715660 is about 12911.8418515718. The cubic root of 166715660 is about 550.3751270069.

The spelling of 166715660 in words is "one hundred sixty-six million, seven hundred fifteen thousand, six hundred sixty".