165378675 has 72 divisors (see below), whose sum is σ = 347067072. Its totient is φ = 68712000.

The previous prime is 165378623. The next prime is 165378701. The reversal of 165378675 is 576873561.

It is not a de Polignac number, because 165378675 - 2⁶ = 165378611 is a prime.

It is a super-2 number, since 2×165378675² = 54700212289511250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 38380 + ... + 42470.

It is an arithmetic number, because the mean of its divisors is an integer number (4820376).

Almost surely, 2^165378675 is an apocalyptic number.

165378675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165378675 is an abundant number, since it is smaller than the sum of its proper divisors (181688397).

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

165378675 is a wasteful number, since it uses less digits than its factorization.

165378675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129 (or 4117 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The square root of 165378675 is about 12859.9640357195. The cubic root of 165378675 is about 548.8999223686.

The spelling of 165378675 in words is "one hundred sixty-five million, three hundred seventy-eight thousand, six hundred seventy-five".