65540112 has 80 divisors (see below), whose sum is σ = 186684480. Its totient is φ = 19648000.

The previous prime is 65540089. The next prime is 65540119. The reversal of 65540112 is 21104556.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (65540119) 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, 52714 + ... + 53942.

It is an arithmetic number, because the mean of its divisors is an integer number (2333556).

Almost surely, 2^65540112 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 65540112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93342240).

65540112 is an abundant number, since it is smaller than the sum of its proper divisors (121144368).

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

65540112 is a wasteful number, since it uses less digits than its factorization.

65540112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 65540112 is about 8095.6847764720. The cubic root of 65540112 is about 403.1831680741.

Adding to 65540112 its reverse (21104556), we get a palindrome (86644668).

Subtracting from 65540112 its reverse (21104556), we obtain a square (44435556 = 6666²).

The spelling of 65540112 in words is "sixty-five million, five hundred forty thousand, one hundred twelve".