64908844 has 144 divisors (see below), whose sum is σ = 162328320. Its totient is φ = 22014720.

The previous prime is 64908827. The next prime is 64908847. The reversal of 64908844 is 44880946.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 64908844.

It is not an unprimeable number, because it can be changed into a prime (64908847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1509487 + ... + 1509529.

It is an arithmetic number, because the mean of its divisors is an integer number (1127280).

Almost surely, 2^64908844 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 64908844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81164160).

64908844 is an abundant number, since it is smaller than the sum of its proper divisors (97419476).

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

64908844 is a wasteful number, since it uses less digits than its factorization.

64908844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 64908844 is about 8056.6025097432. The cubic root of 64908844 is about 401.8845324006.

The spelling of 64908844 in words is "sixty-four million, nine hundred eight thousand, eight hundred forty-four".