686854377 has 16 divisors (see below), whose sum is σ = 1110068160. Its totient is φ = 416275200.

The previous prime is 686854373. The next prime is 686854387. The reversal of 686854377 is 773458686.

It is not a de Polignac number, because 686854377 - 2² = 686854373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686854373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156024 + ... + 1156617.

It is an arithmetic number, because the mean of its divisors is an integer number (69379260).

Almost surely, 2^686854377 is an apocalyptic number.

It is an amenable number.

686854377 is a deficient number, since it is larger than the sum of its proper divisors (423213783).

686854377 is a wasteful number, since it uses less digits than its factorization.

686854377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312661 (or 2312655 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 686854377 is about 26207.9067649440. The cubic root of 686854377 is about 882.3107216575.

The spelling of 686854377 in words is "six hundred eighty-six million, eight hundred fifty-four thousand, three hundred seventy-seven".