667650604 has 24 divisors (see below), whose sum is σ = 1196572608. Its totient is φ = 325812480.

The previous prime is 667650553. The next prime is 667650619. The reversal of 667650604 is 406056766.

667650604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65364 + ... + 74884.

It is an arithmetic number, because the mean of its divisors is an integer number (49857192).

Almost surely, 2^667650604 is an apocalyptic number.

It is an amenable number.

667650604 is a deficient number, since it is larger than the sum of its proper divisors (528922004).

667650604 is a wasteful number, since it uses less digits than its factorization.

667650604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9945 (or 9943 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 667650604 is about 25838.9358139998. The cubic root of 667650604 is about 874.0100276905.

The spelling of 667650604 in words is "six hundred sixty-seven million, six hundred fifty thousand, six hundred four".