667296688 has 10 divisors (see below), whose sum is σ = 1292887364. Its totient is φ = 333648336.

The previous prime is 667296683. The next prime is 667296697. The reversal of 667296688 is 886692766.

It is not an unprimeable number, because it can be changed into a prime (667296683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20853006 + ... + 20853037.

Almost surely, 2^667296688 is an apocalyptic number.

It is an amenable number.

667296688 is a deficient number, since it is larger than the sum of its proper divisors (625590676).

667296688 is a wasteful number, since it uses less digits than its factorization.

667296688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41706051 (or 41706045 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 58.

The square root of 667296688 is about 25832.0864043151. The cubic root of 667296688 is about 873.8555652595.

The spelling of 667296688 in words is "six hundred sixty-seven million, two hundred ninety-six thousand, six hundred eighty-eight".