64540112 has 80 divisors (see below), whose sum is σ = 162072960. Its totient is φ = 24178176.

The previous prime is 64540087. The next prime is 64540123. The reversal of 64540112 is 21104546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26498 + ... + 28830.

It is an arithmetic number, because the mean of its divisors is an integer number (2025912).

Almost surely, 2^64540112 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 64540112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81036480).

64540112 is an abundant number, since it is smaller than the sum of its proper divisors (97532848).

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

64540112 is a wasteful number, since it uses less digits than its factorization.

64540112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2374 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 64540112 is about 8033.6860780093. The cubic root of 64540112 is about 401.1220827160.

Adding to 64540112 its reverse (21104546), we get a palindrome (85644658).

The spelling of 64540112 in words is "sixty-four million, five hundred forty thousand, one hundred twelve".