667254372 has 12 divisors (see below), whose sum is σ = 1556926896. Its totient is φ = 222418120.

The previous prime is 667254319. The next prime is 667254389. The reversal of 667254372 is 273452766.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×667254372² = 890456793906228768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27802254 + ... + 27802277.

It is an arithmetic number, because the mean of its divisors is an integer number (129743908).

Almost surely, 2^667254372 is an apocalyptic number.

It is an amenable number.

667254372 is an abundant number, since it is smaller than the sum of its proper divisors (889672524).

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

667254372 is a wasteful number, since it uses less digits than its factorization.

667254372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55604538 (or 55604536 counting only the distinct ones).

The product of its digits is 423360, while the sum is 42.

The square root of 667254372 is about 25831.2673324404. The cubic root of 667254372 is about 873.8370932892.

The spelling of 667254372 in words is "six hundred sixty-seven million, two hundred fifty-four thousand, three hundred seventy-two".