667172334 has 8 divisors (see below), whose sum is σ = 1334344680. Its totient is φ = 222390776.

The previous prime is 667172309. The next prime is 667172353. The reversal of 667172334 is 433271766.

It is a sphenic number, since it is the product of 3 distinct primes.

667172334 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 667172292 and 667172301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55597689 + ... + 55597700.

It is an arithmetic number, because the mean of its divisors is an integer number (166793085).

Almost surely, 2^667172334 is an apocalyptic number.

667172334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

667172334 is a wasteful number, since it uses less digits than its factorization.

667172334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111195394.

The product of its digits is 127008, while the sum is 39.

The square root of 667172334 is about 25829.6793243741. The cubic root of 667172334 is about 873.8012794683.

The spelling of 667172334 in words is "six hundred sixty-seven million, one hundred seventy-two thousand, three hundred thirty-four".