166862880 has 72 divisors (see below), whose sum is σ = 569424492. Its totient is φ = 44496384.

The previous prime is 166862879. The next prime is 166862903. The reversal of 166862880 is 88268661.

166862880 is a `hidden beast` number, since 16 + 6 + 8 + 628 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149523984 + 17338896 = 12228^2 + 4164^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56499 + ... + 59378.

Almost surely, 2^166862880 is an apocalyptic number.

166862880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166862880 is an abundant number, since it is smaller than the sum of its proper divisors (402561612).

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

166862880 is a wasteful number, since it uses less digits than its factorization.

166862880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115898 (or 115887 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 166862880 is about 12917.5415617679. The cubic root of 166862880 is about 550.5370841731.

The spelling of 166862880 in words is "one hundred sixty-six million, eight hundred sixty-two thousand, eight hundred eighty".