686501708601 has 4 divisors (see below), whose sum is σ = 915335611472. Its totient is φ = 457667805732.

The previous prime is 686501708593. The next prime is 686501708603. The reversal of 686501708601 is 106807105686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 686501708601 - 2³ = 686501708593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686501708603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114416951431 + ... + 114416951436.

It is an arithmetic number, because the mean of its divisors is an integer number (228833902868).

Almost surely, 2^686501708601 is an apocalyptic number.

It is an amenable number.

686501708601 is a deficient number, since it is larger than the sum of its proper divisors (228833902871).

686501708601 is a wasteful number, since it uses less digits than its factorization.

686501708601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228833902870.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 686501708601 in words is "six hundred eighty-six billion, five hundred one million, seven hundred eight thousand, six hundred one".