64244688 has 40 divisors (see below), whose sum is σ = 167176800. Its totient is φ = 21258624.

The previous prime is 64244671. The next prime is 64244689. The reversal of 64244688 is 88644246.

64244688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64244689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (4179420).

Almost surely, 2^64244688 is an apocalyptic number.

It is an amenable number.

64244688 is an abundant number, since it is smaller than the sum of its proper divisors (102932112).

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

64244688 is a wasteful number, since it uses less digits than its factorization.

64244688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9779 (or 9773 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The square root of 64244688 is about 8015.2784106355. The cubic root of 64244688 is about 400.5091183879.

The spelling of 64244688 in words is "sixty-four million, two hundred forty-four thousand, six hundred eighty-eight".