667400488 has 16 divisors (see below), whose sum is σ = 1291743360. Its totient is φ = 322935600.

The previous prime is 667400477. The next prime is 667400491. The reversal of 667400488 is 884004766.

It is a super-2 number, since 2×667400488² = 890846822765276288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345318 + ... + 1345813.

It is an arithmetic number, because the mean of its divisors is an integer number (80733960).

Almost surely, 2^667400488 is an apocalyptic number.

It is an amenable number.

667400488 is a deficient number, since it is larger than the sum of its proper divisors (624342872).

667400488 is a wasteful number, since it uses less digits than its factorization.

667400488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691168 (or 2691164 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 667400488 is about 25834.0954554248. The cubic root of 667400488 is about 873.9008731945.

The spelling of 667400488 in words is "six hundred sixty-seven million, four hundred thousand, four hundred eighty-eight".