667086867 has 16 divisors (see below), whose sum is σ = 997348000. Its totient is φ = 440642592.

The previous prime is 667086841. The next prime is 667086887. The reversal of 667086867 is 768680766.

It is not a de Polignac number, because 667086867 - 2¹⁰ = 667085843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667086887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110392 + ... + 116277.

It is an arithmetic number, because the mean of its divisors is an integer number (62334250).

Almost surely, 2^667086867 is an apocalyptic number.

667086867 is a deficient number, since it is larger than the sum of its proper divisors (330261133).

667086867 is a wasteful number, since it uses less digits than its factorization.

667086867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226787 (or 226781 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 667086867 is about 25828.0248373738. The cubic root of 667086867 is about 873.7639655894.

The spelling of 667086867 in words is "six hundred sixty-seven million, eighty-six thousand, eight hundred sixty-seven".