687230338 has 16 divisors (see below), whose sum is σ = 1092966264. Its totient is φ = 322963200.

The previous prime is 687230333. The next prime is 687230339. The reversal of 687230338 is 833032786.

It can be written as a sum of positive squares in 4 ways, for example, as 560600329 + 126630009 = 23677^2 + 11253^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 687230338.

It is not an unprimeable number, because it can be changed into a prime (687230333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12388 + ... + 39088.

Almost surely, 2^687230338 is an apocalyptic number.

687230338 is a deficient number, since it is larger than the sum of its proper divisors (405735926).

687230338 is a wasteful number, since it uses less digits than its factorization.

687230338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27477.

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

The square root of 687230338 is about 26215.0784473364. The cubic root of 687230338 is about 882.4716747055.

The spelling of 687230338 in words is "six hundred eighty-seven million, two hundred thirty thousand, three hundred thirty-eight".