64105644 has 48 divisors (see below), whose sum is σ = 155151360. Its totient is φ = 20579520.

The previous prime is 64105637. The next prime is 64105681. The reversal of 64105644 is 44650146.

64105644 = 1423² + 1424² + ... + 1453².

64105644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 144487 + ... + 144929.

It is an arithmetic number, because the mean of its divisors is an integer number (3232320).

Almost surely, 2^64105644 is an apocalyptic number.

It is an amenable number.

64105644 is an abundant number, since it is smaller than the sum of its proper divisors (91045716).

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

64105644 is a wasteful number, since it uses less digits than its factorization.

64105644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 64105644 is about 8006.6000274773. The cubic root of 64105644 is about 400.2199706767.

The spelling of 64105644 in words is "sixty-four million, one hundred five thousand, six hundred forty-four".