687397431614 has 4 divisors (see below), whose sum is σ = 1031096147424. Its totient is φ = 343698715806.

The previous prime is 687397431601. The next prime is 687397431647. The reversal of 687397431614 is 416134793786.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171849357902 + ... + 171849357905.

It is an arithmetic number, because the mean of its divisors is an integer number (257774036856).

Almost surely, 2^687397431614 is an apocalyptic number.

687397431614 is a deficient number, since it is larger than the sum of its proper divisors (343698715810).

687397431614 is a wasteful number, since it uses less digits than its factorization.

687397431614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343698715809.

The product of its digits is 18289152, while the sum is 59.

The spelling of 687397431614 in words is "six hundred eighty-seven billion, three hundred ninety-seven million, four hundred thirty-one thousand, six hundred fourteen".