687794795351 has 8 divisors (see below), whose sum is σ = 737096185824. Its totient is φ = 640109844000.

The previous prime is 687794795339. The next prime is 687794795377. The reversal of 687794795351 is 153597497786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 687794795351 - 2³⁰ = 686721053527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687794795951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404108900 + ... + 404110601.

It is an arithmetic number, because the mean of its divisors is an integer number (92137023228).

Almost surely, 2^687794795351 is an apocalyptic number.

687794795351 is a deficient number, since it is larger than the sum of its proper divisors (49301390473).

687794795351 is a wasteful number, since it uses less digits than its factorization.

687794795351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808219561.

The product of its digits is 400075200, while the sum is 71.

The spelling of 687794795351 in words is "six hundred eighty-seven billion, seven hundred ninety-four million, seven hundred ninety-five thousand, three hundred fifty-one".