667833380 has 12 divisors (see below), whose sum is σ = 1402450140. Its totient is φ = 267133344.

The previous prime is 667833377. The next prime is 667833391. The reversal of 667833380 is 83338766.

It can be written as a sum of positive squares in 2 ways, for example, as 329567716 + 338265664 = 18154^2 + 18392^2 .

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, 16695815 + ... + 16695854.

It is an arithmetic number, because the mean of its divisors is an integer number (116870845).

Almost surely, 2^667833380 is an apocalyptic number.

It is an amenable number.

667833380 is an abundant number, since it is smaller than the sum of its proper divisors (734616760).

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

667833380 is a wasteful number, since it uses less digits than its factorization.

667833380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33391678 (or 33391676 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 667833380 is about 25842.4724049383. The cubic root of 667833380 is about 874.0897767292.

The spelling of 667833380 in words is "six hundred sixty-seven million, eight hundred thirty-three thousand, three hundred eighty".