64068940 has 48 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 22890240.

The previous prime is 64068929. The next prime is 64068959. The reversal of 64068940 is 4986046.

It is a self number, because there is not a number n which added to its sum of digits gives 64068940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4086 + ... + 12034.

It is an arithmetic number, because the mean of its divisors is an integer number (3116400).

Almost surely, 2^64068940 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 64068940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74793600).

64068940 is an abundant number, since it is smaller than the sum of its proper divisors (85518260).

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

64068940 is a wasteful number, since it uses less digits than its factorization.

64068940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002 (or 8000 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 64068940 is about 8004.3075902916. The cubic root of 64068940 is about 400.1435734605.

The spelling of 64068940 in words is "sixty-four million, sixty-eight thousand, nine hundred forty".