667000404 has 72 divisors (see below), whose sum is σ = 1931774208. Its totient is φ = 190088640.

The previous prime is 667000403. The next prime is 667000409. The reversal of 667000404 is 404000766.

667000404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667000403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102949 + ... + 109235.

Almost surely, 2^667000404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667000404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965887104).

667000404 is an abundant number, since it is smaller than the sum of its proper divisors (1264773804).

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

667000404 is a wasteful number, since it uses less digits than its factorization.

667000404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725 (or 6720 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 667000404 is about 25826.3509617600. The cubic root of 667000404 is about 873.7262136255.

The spelling of 667000404 in words is "six hundred sixty-seven million, four hundred four", and thus it is an aban number.