667298946 has 8 divisors (see below), whose sum is σ = 1334597904. Its totient is φ = 222432980.

The previous prime is 667298923. The next prime is 667298969. The reversal of 667298946 is 649892766.

It is an interprime number because it is at equal distance from previous prime (667298923) and next prime (667298969).

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

667298946 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55608240 + ... + 55608251.

It is an arithmetic number, because the mean of its divisors is an integer number (166824738).

Almost surely, 2^667298946 is an apocalyptic number.

667298946 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.

667298946 is a wasteful number, since it uses less digits than its factorization.

667298946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111216496.

The product of its digits is 7838208, while the sum is 57.

The square root of 667298946 is about 25832.1301096135. The cubic root of 667298946 is about 873.8565509098.

The spelling of 667298946 in words is "six hundred sixty-seven million, two hundred ninety-eight thousand, nine hundred forty-six".