64087144 has 32 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 27416320.

The previous prime is 64087139. The next prime is 64087147. The reversal of 64087144 is 44178046.

64087144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (64087147) 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, 19924 + ... + 22915.

It is an arithmetic number, because the mean of its divisors is an integer number (4337550).

Almost surely, 2^64087144 is an apocalyptic number.

It is an amenable number.

64087144 is an abundant number, since it is smaller than the sum of its proper divisors (74714456).

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

64087144 is a wasteful number, since it uses less digits than its factorization.

64087144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42873 (or 42869 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 64087144 is about 8005.4446472385. Note that the first 3 decimals coincide. The cubic root of 64087144 is about 400.1814676613.

The spelling of 64087144 in words is "sixty-four million, eighty-seven thousand, one hundred forty-four".