64448685 has 24 divisors (see below), whose sum is σ = 127670400. Its totient is φ = 29462112.

The previous prime is 64448653. The next prime is 64448687. The reversal of 64448685 is 58684446.

It is not a de Polignac number, because 64448685 - 2⁵ = 64448653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64448685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64448687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101985 + ... + 102614.

It is an arithmetic number, because the mean of its divisors is an integer number (5319600).

Almost surely, 2^64448685 is an apocalyptic number.

It is an amenable number.

64448685 is a deficient number, since it is larger than the sum of its proper divisors (63221715).

64448685 is a wasteful number, since it uses less digits than its factorization.

64448685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204617 (or 204614 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 64448685 is about 8027.9938340783. The cubic root of 64448685 is about 400.9325844426.

It can be divided in two parts, 6444 and 8685, that added together give a square (15129 = 123²).

The spelling of 64448685 in words is "sixty-four million, four hundred forty-eight thousand, six hundred eighty-five".