685513366563 has 8 divisors (see below), whose sum is σ = 953757727488. Its totient is φ = 437138958344.

The previous prime is 685513366561. The next prime is 685513366591. The reversal of 685513366563 is 365663315586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685513366563 - 2¹ = 685513366561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685513366561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4967488095 + ... + 4967488232.

It is an arithmetic number, because the mean of its divisors is an integer number (119219715936).

Almost surely, 2^685513366563 is an apocalyptic number.

685513366563 is a deficient number, since it is larger than the sum of its proper divisors (268244360925).

685513366563 is a wasteful number, since it uses less digits than its factorization.

685513366563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9934976353.

The product of its digits is 34992000, while the sum is 57.

The spelling of 685513366563 in words is "six hundred eighty-five billion, five hundred thirteen million, three hundred sixty-six thousand, five hundred sixty-three".