686336773 has 4 divisors (see below), whose sum is σ = 686518848. Its totient is φ = 686154700.

The previous prime is 686336759. The next prime is 686336797. The reversal of 686336773 is 377633686.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686336773 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 (686336173) 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 3 ways as a sum of consecutive naturals, for example, 85261 + ... + 92962.

It is an arithmetic number, because the mean of its divisors is an integer number (171629712).

Almost surely, 2^686336773 is an apocalyptic number.

It is an amenable number.

686336773 is a deficient number, since it is larger than the sum of its proper divisors (182075).

686336773 is a wasteful number, since it uses less digits than its factorization.

686336773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182074.

The product of its digits is 2286144, while the sum is 49.

The square root of 686336773 is about 26198.0299450169. The cubic root of 686336773 is about 882.0890335579.

The spelling of 686336773 in words is "six hundred eighty-six million, three hundred thirty-six thousand, seven hundred seventy-three".