64288764 has 72 divisors (see below), whose sum is σ = 174545280. Its totient is φ = 19878912.

The previous prime is 64288753. The next prime is 64288769. The reversal of 64288764 is 46788246.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64288769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43957 + ... + 45395.

It is an arithmetic number, because the mean of its divisors is an integer number (2424240).

Almost surely, 2^64288764 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 64288764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87272640).

64288764 is an abundant number, since it is smaller than the sum of its proper divisors (110256516).

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

64288764 is a wasteful number, since it uses less digits than its factorization.

64288764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539 (or 1534 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 64288764 is about 8018.0274382170. The cubic root of 64288764 is about 400.6006891465.

The spelling of 64288764 in words is "sixty-four million, two hundred eighty-eight thousand, seven hundred sixty-four".