667443360 has 48 divisors (see below), whose sum is σ = 2102448096. Its totient is φ = 177984768.

The previous prime is 667443353. The next prime is 667443373. The reversal of 667443360 is 63344766.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694774 + ... + 695733.

It is an arithmetic number, because the mean of its divisors is an integer number (43801002).

Almost surely, 2^667443360 is an apocalyptic number.

667443360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667443360 is an abundant number, since it is smaller than the sum of its proper divisors (1435004736).

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

667443360 is a wasteful number, since it uses less digits than its factorization.

667443360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390525 (or 1390517 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 39.

The square root of 667443360 is about 25834.9251982660. The cubic root of 667443360 is about 873.9195851356.

The spelling of 667443360 in words is "six hundred sixty-seven million, four hundred forty-three thousand, three hundred sixty".