6436680685 has 8 divisors (see below), whose sum is σ = 7724458080. Its totient is φ = 5149050384.

The previous prime is 6436680667. The next prime is 6436680713. The reversal of 6436680685 is 5860866346.

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 6436680685 - 2⁷ = 6436680557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121206 + ... + 166024.

It is an arithmetic number, because the mean of its divisors is an integer number (965557260).

Almost surely, 2^6436680685 is an apocalyptic number.

It is an amenable number.

6436680685 is a deficient number, since it is larger than the sum of its proper divisors (1287777395).

6436680685 is a wasteful number, since it uses less digits than its factorization.

6436680685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73547.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The square root of 6436680685 is about 80228.9267346884. The cubic root of 6436680685 is about 1860.1757922454.

The spelling of 6436680685 in words is "six billion, four hundred thirty-six million, six hundred eighty thousand, six hundred eighty-five".