64680960 has 88 divisors (see below), whose sum is σ = 206927136. Its totient is φ = 17244160.

The previous prime is 64680953. The next prime is 64680983. The reversal of 64680960 is 6908646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13255 + ... + 17465.

Almost surely, 2^64680960 is an apocalyptic number.

64680960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64680960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103463568).

64680960 is an abundant number, since it is smaller than the sum of its proper divisors (142246176).

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

64680960 is a wasteful number, since it uses less digits than its factorization.

64680960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239 (or 4221 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 64680960 is about 8042.4473886995. The cubic root of 64680960 is about 401.4136646615.

The spelling of 64680960 in words is "sixty-four million, six hundred eighty thousand, nine hundred sixty".