166988255 has 8 divisors (see below), whose sum is σ = 229012512. Its totient is φ = 114506208.

The previous prime is 166988243. The next prime is 166988267. The reversal of 166988255 is 552889661.

It is an interprime number because it is at equal distance from previous prime (166988243) and next prime (166988267).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166988255 - 2¹⁰ = 166987231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2385512 + ... + 2385581.

It is an arithmetic number, because the mean of its divisors is an integer number (28626564).

Almost surely, 2^166988255 is an apocalyptic number.

166988255 is a deficient number, since it is larger than the sum of its proper divisors (62024257).

166988255 is an equidigital number, since it uses as much as digits as its factorization.

166988255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771105.

The product of its digits is 1036800, while the sum is 50.

The square root of 166988255 is about 12922.3935476366. The cubic root of 166988255 is about 550.6749344983.

The spelling of 166988255 in words is "one hundred sixty-six million, nine hundred eighty-eight thousand, two hundred fifty-five".