687113544 has 32 divisors (see below), whose sum is σ = 1849921920. Its totient is φ = 211419456.

The previous prime is 687113533. The next prime is 687113579. The reversal of 687113544 is 445311786.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100832 + ... + 1101455.

It is an arithmetic number, because the mean of its divisors is an integer number (57810060).

Almost surely, 2^687113544 is an apocalyptic number.

It is an amenable number.

687113544 is an abundant number, since it is smaller than the sum of its proper divisors (1162808376).

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

687113544 is a wasteful number, since it uses less digits than its factorization.

687113544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202309 (or 2202305 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 687113544 is about 26212.8507415733. The cubic root of 687113544 is about 882.4216801936.

The spelling of 687113544 in words is "six hundred eighty-seven million, one hundred thirteen thousand, five hundred forty-four".