6685736863 has 32 divisors (see below), whose sum is σ = 7711925760. Its totient is φ = 5741506560.

The previous prime is 6685736831. The next prime is 6685736903. The reversal of 6685736863 is 3686375866.

It is not a de Polignac number, because 6685736863 - 2⁵ = 6685736831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6685736798 and 6685736807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685736803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13957458 + ... + 13957936.

It is an arithmetic number, because the mean of its divisors is an integer number (240997680).

Almost surely, 2^6685736863 is an apocalyptic number.

6685736863 is a deficient number, since it is larger than the sum of its proper divisors (1026188897).

6685736863 is a wasteful number, since it uses less digits than its factorization.

6685736863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107.

The product of its digits is 26127360, while the sum is 58.

The square root of 6685736863 is about 81766.3553241796. The cubic root of 6685736863 is about 1883.8649235149.

The spelling of 6685736863 in words is "six billion, six hundred eighty-five million, seven hundred thirty-six thousand, eight hundred sixty-three".