64144764 has 24 divisors (see below), whose sum is σ = 166301520. Its totient is φ = 21381552.

The previous prime is 64144753. The next prime is 64144783. The reversal of 64144764 is 46744146.

64144764 is a `hidden beast` number, since 641 + 4 + 4 + 7 + 6 + 4 = 666.

It is a super-2 number, since 2×64144764² = 8229101497231392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 296859 + ... + 297074.

It is an arithmetic number, because the mean of its divisors is an integer number (6929230).

Almost surely, 2^64144764 is an apocalyptic number.

It is an amenable number.

64144764 is an abundant number, since it is smaller than the sum of its proper divisors (102156756).

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

64144764 is a wasteful number, since it uses less digits than its factorization.

64144764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593946 (or 593938 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64144764 is about 8009.0426394170. The cubic root of 64144764 is about 400.3013645582.

The spelling of 64144764 in words is "sixty-four million, one hundred forty-four thousand, seven hundred sixty-four".