667601677090 has 32 divisors (see below), whose sum is σ = 1234289327040. Its totient is φ = 259796326464.

The previous prime is 667601677063. The next prime is 667601677187. The reversal of 667601677090 is 90776106766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3671541 + ... + 3849079.

It is an arithmetic number, because the mean of its divisors is an integer number (38571541470).

Almost surely, 2^667601677090 is an apocalyptic number.

667601677090 is a deficient number, since it is larger than the sum of its proper divisors (566687649950).

667601677090 is a wasteful number, since it uses less digits than its factorization.

667601677090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187746.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 667601677090 in words is "six hundred sixty-seven billion, six hundred one million, six hundred seventy-seven thousand, ninety".