165408475 has 6 divisors (see below), whose sum is σ = 205106540. Its totient is φ = 132326760.

The previous prime is 165408469. The next prime is 165408497. The reversal of 165408475 is 574804561.

It is not a de Polignac number, because 165408475 - 2¹⁷ = 165277403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3308145 + ... + 3308194.

Almost surely, 2^165408475 is an apocalyptic number.

165408475 is a deficient number, since it is larger than the sum of its proper divisors (39698065).

165408475 is an equidigital number, since it uses as much as digits as its factorization.

165408475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616349 (or 6616344 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 165408475 is about 12861.1226181854. The cubic root of 165408475 is about 548.9328896083.

The spelling of 165408475 in words is "one hundred sixty-five million, four hundred eight thousand, four hundred seventy-five".