667322994 has 32 divisors (see below), whose sum is σ = 1438557120. Its totient is φ = 205152192.

The previous prime is 667322993. The next prime is 667323037. The reversal of 667322994 is 499223766.

667322994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×667322994² = 890639956642248072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667322993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108469 + ... + 114455.

It is an arithmetic number, because the mean of its divisors is an integer number (44954910).

Almost surely, 2^667322994 is an apocalyptic number.

667322994 is an abundant number, since it is smaller than the sum of its proper divisors (771234126).

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

667322994 is a wasteful number, since it uses less digits than its factorization.

667322994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7434.

The product of its digits is 979776, while the sum is 48.

The square root of 667322994 is about 25832.5955722610. The cubic root of 667322994 is about 873.8670480791.

The spelling of 667322994 in words is "six hundred sixty-seven million, three hundred twenty-two thousand, nine hundred ninety-four".