686996423067 has 4 divisors (see below), whose sum is σ = 915995230760. Its totient is φ = 457997615376.

The previous prime is 686996423059. The next prime is 686996423149. The reversal of 686996423067 is 760324699686.

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

It is not a de Polignac number, because 686996423067 - 2³ = 686996423059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686996422989 and 686996423007.

It is not an unprimeable number, because it can be changed into a prime (686996423567) 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, 114499403842 + ... + 114499403847.

It is an arithmetic number, because the mean of its divisors is an integer number (228998807690).

Almost surely, 2^686996423067 is an apocalyptic number.

686996423067 is a deficient number, since it is larger than the sum of its proper divisors (228998807693).

686996423067 is a wasteful number, since it uses less digits than its factorization.

686996423067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228998807692.

The product of its (nonzero) digits is 141087744, while the sum is 66.

The spelling of 686996423067 in words is "six hundred eighty-six billion, nine hundred ninety-six million, four hundred twenty-three thousand, sixty-seven".