65112880 has 40 divisors (see below), whose sum is σ = 173015712. Its totient is φ = 22324224.

The previous prime is 65112877. The next prime is 65112889. The reversal of 65112880 is 8821156.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (65112889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57577 + ... + 58696.

Almost surely, 2^65112880 is an apocalyptic number.

It is an amenable number.

65112880 is an abundant number, since it is smaller than the sum of its proper divisors (107902832).

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

65112880 is a wasteful number, since it uses less digits than its factorization.

65112880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116293 (or 116287 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 65112880 is about 8069.2552320521. The cubic root of 65112880 is about 402.3051897309.

It can be divided in two parts, 651 and 12880, that added together give a palindrome (13531).

The spelling of 65112880 in words is "sixty-five million, one hundred twelve thousand, eight hundred eighty".