64683685 has 16 divisors (see below), whose sum is σ = 84839040. Its totient is φ = 46952640.

The previous prime is 64683683. The next prime is 64683709. The reversal of 64683685 is 58638646.

It is not a de Polignac number, because 64683685 - 2¹ = 64683683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64683683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44551 + ... + 45979.

It is an arithmetic number, because the mean of its divisors is an integer number (5302440).

Almost surely, 2^64683685 is an apocalyptic number.

It is an amenable number.

64683685 is a deficient number, since it is larger than the sum of its proper divisors (20155355).

64683685 is a wasteful number, since it uses less digits than its factorization.

64683685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268.

The product of its digits is 829440, while the sum is 46.

The square root of 64683685 is about 8042.6168005196. The cubic root of 64683685 is about 401.4193017500.

It can be divided in two parts, 6468 and 3685, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 64683685 in words is "sixty-four million, six hundred eighty-three thousand, six hundred eighty-five".