64441685 has 16 divisors (see below), whose sum is σ = 96412032. Its totient is φ = 40171200.

The previous prime is 64441669. The next prime is 64441687. The reversal of 64441685 is 58614446.

It is not a de Polignac number, because 64441685 - 2⁴ = 64441669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64441687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83306 + ... + 84075.

It is an arithmetic number, because the mean of its divisors is an integer number (6025752).

Almost surely, 2^64441685 is an apocalyptic number.

It is an amenable number.

64441685 is a deficient number, since it is larger than the sum of its proper divisors (31970347).

64441685 is a wasteful number, since it uses less digits than its factorization.

64441685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167404.

The product of its digits is 92160, while the sum is 38.

The square root of 64441685 is about 8027.5578478140. The cubic root of 64441685 is about 400.9180683475.

The spelling of 64441685 in words is "sixty-four million, four hundred forty-one thousand, six hundred eighty-five".