167974561 has 8 divisors (see below), whose sum is σ = 175091840. Its totient is φ = 160993008.

The previous prime is 167974553. The next prime is 167974601. The reversal of 167974561 is 165479761.

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 167974561 - 2³ = 167974553 is a prime.

It is the 12961-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167974511) by changing a digit.

It is a nontrivial repunit in base 12960.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31401 + ... + 36358.

It is an arithmetic number, because the mean of its divisors is an integer number (21886480).

Almost surely, 2^167974561 is an apocalyptic number.

It is an amenable number.

167974561 is a deficient number, since it is larger than the sum of its proper divisors (7117279).

167974561 is an equidigital number, since it uses as much as digits as its factorization.

167974561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67863.

The product of its digits is 317520, while the sum is 46.

The square root of 167974561 is about 12960.5000289341. The cubic root of 167974561 is about 551.7569829687.

The spelling of 167974561 in words is "one hundred sixty-seven million, nine hundred seventy-four thousand, five hundred sixty-one".