64686108 has 48 divisors (see below), whose sum is σ = 161517440. Its totient is φ = 20088000.

The previous prime is 64686091. The next prime is 64686109. The reversal of 64686108 is 80168646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64686109) 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, 11583 + ... + 16233.

Almost surely, 2^64686108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64686108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80758720).

64686108 is an abundant number, since it is smaller than the sum of its proper divisors (96831332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64686108 is a wasteful number, since it uses less digits than its factorization.

64686108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738 (or 4736 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 64686108 is about 8042.7674341610. The cubic root of 64686108 is about 401.4243139712.

The spelling of 64686108 in words is "sixty-four million, six hundred eighty-six thousand, one hundred eight".