667378332 has 48 divisors (see below), whose sum is σ = 1762901280. Its totient is φ = 218260224.

The previous prime is 667378319. The next prime is 667378343. The reversal of 667378332 is 233873766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52573 + ... + 64020.

It is an arithmetic number, because the mean of its divisors is an integer number (36727110).

Almost surely, 2^667378332 is an apocalyptic number.

It is an amenable number.

667378332 is an abundant number, since it is smaller than the sum of its proper divisors (1095522948).

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

667378332 is a wasteful number, since it uses less digits than its factorization.

667378332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116659 (or 116651 counting only the distinct ones).

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

The square root of 667378332 is about 25833.6666387100. Note that the first 4 decimals coincide. The cubic root of 667378332 is about 873.8912026581.

The spelling of 667378332 in words is "six hundred sixty-seven million, three hundred seventy-eight thousand, three hundred thirty-two".