667872552 has 64 divisors (see below), whose sum is σ = 1736380800. Its totient is φ = 213812480.

The previous prime is 667872487. The next prime is 667872563. The reversal of 667872552 is 255278766.

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 15 ways as a sum of consecutive naturals, for example, 134677 + ... + 139547.

It is an arithmetic number, because the mean of its divisors is an integer number (27130950).

Almost surely, 2^667872552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667872552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868190400).

667872552 is an abundant number, since it is smaller than the sum of its proper divisors (1068508248).

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

667872552 is a wasteful number, since it uses less digits than its factorization.

667872552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106 (or 5102 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 667872552 is about 25843.2302934444. The cubic root of 667872552 is about 874.1068664087.

The spelling of 667872552 in words is "six hundred sixty-seven million, eight hundred seventy-two thousand, five hundred fifty-two".