685503903367 has 4 divisors (see below), whose sum is σ = 688948646800. Its totient is φ = 682059159936.

The previous prime is 685503903353. The next prime is 685503903373. The reversal of 685503903367 is 763309305586.

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

It is a cyclic number.

It is not a de Polignac number, because 685503903367 - 2³⁵ = 651144164999 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 (685503903347) 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, 1722371418 + ... + 1722371815.

It is an arithmetic number, because the mean of its divisors is an integer number (172237161700).

Almost surely, 2^685503903367 is an apocalyptic number.

685503903367 is a deficient number, since it is larger than the sum of its proper divisors (3444743433).

685503903367 is a wasteful number, since it uses less digits than its factorization.

685503903367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444743432.

The product of its (nonzero) digits is 12247200, while the sum is 55.

The spelling of 685503903367 in words is "six hundred eighty-five billion, five hundred three million, nine hundred three thousand, three hundred sixty-seven".