667866336 has 48 divisors (see below), whose sum is σ = 1756137600. Its totient is φ = 222242688.

The previous prime is 667866323. The next prime is 667866337. The reversal of 667866336 is 633668766.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667866337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53805 + ... + 65043.

It is an arithmetic number, because the mean of its divisors is an integer number (36586200).

Almost surely, 2^667866336 is an apocalyptic number.

It is an amenable number.

667866336 is an abundant number, since it is smaller than the sum of its proper divisors (1088271264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667866336 is a wasteful number, since it uses less digits than its factorization.

667866336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11871 (or 11863 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 51.

The square root of 667866336 is about 25843.1100295611. The cubic root of 667866336 is about 874.1041545814.

The spelling of 667866336 in words is "six hundred sixty-seven million, eight hundred sixty-six thousand, three hundred thirty-six".