667589104 has 80 divisors (see below), whose sum is σ = 1629117952. Its totient is φ = 257935104.

The previous prime is 667589057. The next prime is 667589137. The reversal of 667589104 is 401985766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57277 + ... + 67939.

Almost surely, 2^667589104 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 667589104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814558976).

667589104 is an abundant number, since it is smaller than the sum of its proper divisors (961528848).

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

667589104 is a wasteful number, since it uses less digits than its factorization.

667589104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734 (or 10728 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 667589104 is about 25837.7457221020. The cubic root of 667589104 is about 873.9831906658.

The spelling of 667589104 in words is "six hundred sixty-seven million, five hundred eighty-nine thousand, one hundred four".