687682236 has 12 divisors (see below), whose sum is σ = 1604591912. Its totient is φ = 229227408.

The previous prime is 687682231. The next prime is 687682241. The reversal of 687682236 is 632286786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (687682231) and next prime (687682241).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687682231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28653415 + ... + 28653438.

Almost surely, 2^687682236 is an apocalyptic number.

It is an amenable number.

687682236 is an abundant number, since it is smaller than the sum of its proper divisors (916909676).

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

687682236 is a wasteful number, since it uses less digits than its factorization.

687682236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57306860 (or 57306858 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 687682236 is about 26223.6960781656. The cubic root of 687682236 is about 882.6650595555.

The spelling of 687682236 in words is "six hundred eighty-seven million, six hundred eighty-two thousand, two hundred thirty-six".