667017099 has 20 divisors (see below), whose sum is σ = 1138753264. Its totient is φ = 381152304.

The previous prime is 667017067. The next prime is 667017119. The reversal of 667017099 is 990710766.

It is not a de Polignac number, because 667017099 - 2⁵ = 667017067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667013099) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 587632 + ... + 588765.

Almost surely, 2^667017099 is an apocalyptic number.

667017099 is a deficient number, since it is larger than the sum of its proper divisors (471736165).

667017099 is a wasteful number, since it uses less digits than its factorization.

667017099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176416 (or 1176407 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 667017099 is about 25826.6741761304. The cubic root of 667017099 is about 873.7335033449.

The spelling of 667017099 in words is "six hundred sixty-seven million, seventeen thousand, ninety-nine".