64265216 has 44 divisors (see below), whose sum is σ = 129992688. Its totient is φ = 31752192.

The previous prime is 64265213. The next prime is 64265237. The reversal of 64265216 is 61256246.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64265213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99005 + ... + 99651.

Almost surely, 2^64265216 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 64265216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64996344).

64265216 is an abundant number, since it is smaller than the sum of its proper divisors (65727472).

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

64265216 is an equidigital number, since it uses as much as digits as its factorization.

64265216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 746 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 64265216 is about 8016.5588627540. The cubic root of 64265216 is about 400.5517718529.

The spelling of 64265216 in words is "sixty-four million, two hundred sixty-five thousand, two hundred sixteen".