64379808 has 72 divisors (see below), whose sum is σ = 189012096. Its totient is φ = 20764800.

The previous prime is 64379807. The next prime is 64379813. The reversal of 64379808 is 80897346.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64379803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5323 + ... + 12533.

It is an arithmetic number, because the mean of its divisors is an integer number (2625168).

Almost surely, 2^64379808 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 64379808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94506048).

64379808 is an abundant number, since it is smaller than the sum of its proper divisors (124632288).

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

64379808 is a wasteful number, since it uses less digits than its factorization.

64379808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258 (or 7247 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 64379808 is about 8023.7028858252. The cubic root of 64379808 is about 400.7897065496.

The spelling of 64379808 in words is "sixty-four million, three hundred seventy-nine thousand, eight hundred eight".