168081375 has 64 divisors (see below), whose sum is σ = 348761088. Its totient is φ = 69840000.

The previous prime is 168081317. The next prime is 168081409. The reversal of 168081375 is 573180861.

It is not a de Polignac number, because 168081375 - 2⁶ = 168081311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25965 + ... + 31785.

It is an arithmetic number, because the mean of its divisors is an integer number (5449392).

Almost surely, 2^168081375 is an apocalyptic number.

168081375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168081375 is an abundant number, since it is smaller than the sum of its proper divisors (180679713).

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

168081375 is a wasteful number, since it uses less digits than its factorization.

168081375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857 (or 5847 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 168081375 is about 12964.6201255571. The cubic root of 168081375 is about 551.8739111556.

The spelling of 168081375 in words is "one hundred sixty-eight million, eighty-one thousand, three hundred seventy-five".