667044044 has 6 divisors (see below), whose sum is σ = 1167327084. Its totient is φ = 333522020.

The previous prime is 667044041. The next prime is 667044083. The reversal of 667044044 is 440440766.

It is a junction number, because it is equal to n+sod(n) for n = 667043995 and 667044013.

It is not an unprimeable number, because it can be changed into a prime (667044041) by changing a digit.

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 as a sum of consecutive naturals, namely, 83380502 + ... + 83380509.

It is an arithmetic number, because the mean of its divisors is an integer number (194554514).

Almost surely, 2^667044044 is an apocalyptic number.

It is an amenable number.

667044044 is a deficient number, since it is larger than the sum of its proper divisors (500283040).

667044044 is a wasteful number, since it uses less digits than its factorization.

667044044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166761015 (or 166761013 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 35.

The square root of 667044044 is about 25827.1958214592. The cubic root of 667044044 is about 873.7452683767.

The spelling of 667044044 in words is "six hundred sixty-seven million, forty-four thousand, forty-four".