161806675 has 12 divisors (see below), whose sum is σ = 203637016. Its totient is φ = 127512000.

The previous prime is 161806651. The next prime is 161806681. The reversal of 161806675 is 576608161.

It is not a de Polignac number, because 161806675 - 2⁵ = 161806643 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 46626 + ... + 49975.

Almost surely, 2^161806675 is an apocalyptic number.

161806675 is a deficient number, since it is larger than the sum of its proper divisors (41830341).

161806675 is an equidigital number, since it uses as much as digits as its factorization.

161806675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96678 (or 96673 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 161806675 is about 12720.3252709984. The cubic root of 161806675 is about 544.9192428668.

The spelling of 161806675 in words is "one hundred sixty-one million, eight hundred six thousand, six hundred seventy-five".