667323873 has 16 divisors (see below), whose sum is σ = 997381440. Its totient is φ = 440943552.

The previous prime is 667323859. The next prime is 667323893. The reversal of 667323873 is 378323766.

It is not a de Polignac number, because 667323873 - 2⁵ = 667323841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667323893) 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, 106311 + ... + 112412.

It is an arithmetic number, because the mean of its divisors is an integer number (62336340).

Almost surely, 2^667323873 is an apocalyptic number.

It is an amenable number.

667323873 is a deficient number, since it is larger than the sum of its proper divisors (330057567).

667323873 is a wasteful number, since it uses less digits than its factorization.

667323873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218845 (or 218839 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 667323873 is about 25832.6125856445. The cubic root of 667323873 is about 873.8674317657.

The spelling of 667323873 in words is "six hundred sixty-seven million, three hundred twenty-three thousand, eight hundred seventy-three".