687113734 has 4 divisors (see below), whose sum is σ = 1030670604. Its totient is φ = 343556866.

The previous prime is 687113723. The next prime is 687113737. The reversal of 687113734 is 437311786.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687113737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171778432 + ... + 171778435.

It is an arithmetic number, because the mean of its divisors is an integer number (257667651).

Almost surely, 2^687113734 is an apocalyptic number.

687113734 is a deficient number, since it is larger than the sum of its proper divisors (343556870).

687113734 is a wasteful number, since it uses less digits than its factorization.

687113734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343556869.

The product of its digits is 84672, while the sum is 40.

The square root of 687113734 is about 26212.8543657496. The cubic root of 687113734 is about 882.4217615290.

The spelling of 687113734 in words is "six hundred eighty-seven million, one hundred thirteen thousand, seven hundred thirty-four".