64685892 has 48 divisors (see below), whose sum is σ = 156945600. Its totient is φ = 20711040.

The previous prime is 64685857. The next prime is 64685909. The reversal of 64685892 is 29858646.

It is a happy number.

64685892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93267 + ... + 93957.

It is an arithmetic number, because the mean of its divisors is an integer number (3269700).

Almost surely, 2^64685892 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 64685892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78472800).

64685892 is an abundant number, since it is smaller than the sum of its proper divisors (92259708).

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

64685892 is a wasteful number, since it uses less digits than its factorization.

64685892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 994 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 64685892 is about 8042.7540059360. The cubic root of 64685892 is about 401.4238671584.

The spelling of 64685892 in words is "sixty-four million, six hundred eighty-five thousand, eight hundred ninety-two".