166516992 has 72 divisors (see below), whose sum is σ = 492440480. Its totient is φ = 55503360.

The previous prime is 166516991. The next prime is 166516993. The reversal of 166516992 is 299615661.

It is a happy number.

166516992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166516991) and next prime (166516993).

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (166516991) 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, 5134 + ... + 18957.

Almost surely, 2^166516992 is an apocalyptic number.

166516992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166516992 is an abundant number, since it is smaller than the sum of its proper divisors (325923488).

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

166516992 is an equidigital number, since it uses as much as digits as its factorization.

166516992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24116 (or 24096 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 166516992 is about 12904.1463103919. The cubic root of 166516992 is about 550.1564205234.

The spelling of 166516992 in words is "one hundred sixty-six million, five hundred sixteen thousand, nine hundred ninety-two".