687366220 has 12 divisors (see below), whose sum is σ = 1443469104. Its totient is φ = 274946480.

The previous prime is 687366203. The next prime is 687366221. The reversal of 687366220 is 22663786.

It is not an unprimeable number, because it can be changed into a prime (687366221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17184136 + ... + 17184175.

It is an arithmetic number, because the mean of its divisors is an integer number (120289092).

Almost surely, 2^687366220 is an apocalyptic number.

It is an amenable number.

687366220 is an abundant number, since it is smaller than the sum of its proper divisors (756102884).

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

687366220 is a wasteful number, since it uses less digits than its factorization.

687366220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34368320 (or 34368318 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 687366220 is about 26217.6699956346. The cubic root of 687366220 is about 882.5298328451.

The spelling of 687366220 in words is "six hundred eighty-seven million, three hundred sixty-six thousand, two hundred twenty".