64996224 has 64 divisors (see below), whose sum is σ = 173738640. Its totient is φ = 21528576.

The previous prime is 64996213. The next prime is 64996237. The reversal of 64996224 is 42269946.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73674 + ... + 74550.

Almost surely, 2^64996224 is an apocalyptic number.

64996224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64996224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86869320).

64996224 is an abundant number, since it is smaller than the sum of its proper divisors (108742416).

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

64996224 is a wasteful number, since it uses less digits than its factorization.

64996224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1075 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 64996224 is about 8062.0235673186. The cubic root of 64996224 is about 402.0647899335.

The spelling of 64996224 in words is "sixty-four million, nine hundred ninety-six thousand, two hundred twenty-four".