667989202 has 4 divisors (see below), whose sum is σ = 1001983806. Its totient is φ = 333994600.

The previous prime is 667989197. The next prime is 667989281. The reversal of 667989202 is 202989766.

667989202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 622951681 + 45037521 = 24959^2 + 6711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166997299 + ... + 166997302.

Almost surely, 2^667989202 is an apocalyptic number.

667989202 is a deficient number, since it is larger than the sum of its proper divisors (333994604).

667989202 is a wasteful number, since it uses less digits than its factorization.

667989202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333994603.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 667989202 is about 25845.4870722144. The cubic root of 667989202 is about 874.1577536775.

The spelling of 667989202 in words is "six hundred sixty-seven million, nine hundred eighty-nine thousand, two hundred two".