667109328 has 40 divisors (see below), whose sum is σ = 1734362208. Its totient is φ = 220950912.

The previous prime is 667109309. The next prime is 667109351. The reversal of 667109328 is 823901766.

It is a happy number.

667109328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×667109328² = 890069711009223168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 667109328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36726 + ... + 51797.

Almost surely, 2^667109328 is an apocalyptic number.

It is an amenable number.

667109328 is an abundant number, since it is smaller than the sum of its proper divisors (1067252880).

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

667109328 is a wasteful number, since it uses less digits than its factorization.

667109328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88691 (or 88685 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 667109328 is about 25828.4596520969. The cubic root of 667109328 is about 873.7737721044.

The spelling of 667109328 in words is "six hundred sixty-seven million, one hundred nine thousand, three hundred twenty-eight".