65245680 has 60 divisors (see below), whose sum is σ = 219119160. Its totient is φ = 17398656.

The previous prime is 65245667. The next prime is 65245723. The reversal of 65245680 is 8654256.

65245680 is a `hidden beast` number, since 6 + 524 + 56 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44590 + ... + 46029.

It is an arithmetic number, because the mean of its divisors is an integer number (3651986).

Almost surely, 2^65245680 is an apocalyptic number.

65245680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65245680 is an abundant number, since it is smaller than the sum of its proper divisors (153873480).

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

65245680 is a wasteful number, since it uses less digits than its factorization.

65245680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90638 (or 90629 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 65245680 is about 8077.4798049887. The cubic root of 65245680 is about 402.5785091766.

The spelling of 65245680 in words is "sixty-five million, two hundred forty-five thousand, six hundred eighty".