64660960 has 96 divisors (see below), whose sum is σ = 188056512. Its totient is φ = 20459520.

The previous prime is 64660957. The next prime is 64660961. The reversal of 64660960 is 6906646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64660961) 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, 12340 + ... + 16780.

It is an arithmetic number, because the mean of its divisors is an integer number (1958922).

Almost surely, 2^64660960 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 64660960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94028256).

64660960 is an abundant number, since it is smaller than the sum of its proper divisors (123395552).

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

64660960 is a wasteful number, since it uses less digits than its factorization.

64660960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476 (or 4468 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 64660960 is about 8041.2038899657. The cubic root of 64660960 is about 401.3722866893.

The spelling of 64660960 in words is "sixty-four million, six hundred sixty thousand, nine hundred sixty".