64908768 has 96 divisors (see below), whose sum is σ = 176359680. Its totient is φ = 20894720.

The previous prime is 64908763. The next prime is 64908773. The reversal of 64908768 is 86780946.

It is an interprime number because it is at equal distance from previous prime (64908763) and next prime (64908773).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64908763) 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, 606571 + ... + 606677.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^64908768 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 64908768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88179840).

64908768 is an abundant number, since it is smaller than the sum of its proper divisors (111450912).

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

64908768 is a wasteful number, since it uses less digits than its factorization.

64908768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 64908768 is about 8056.5977931134. The cubic root of 64908768 is about 401.8843755487.

The spelling of 64908768 in words is "sixty-four million, nine hundred eight thousand, seven hundred sixty-eight".