6464864 has 96 divisors (see below), whose sum is σ = 16128000. Its totient is φ = 2540160.

The previous prime is 6464851. The next prime is 6464873. The reversal of 6464864 is 4684646.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208529 + ... + 208559.

It is an arithmetic number, because the mean of its divisors is an integer number (168000).

Almost surely, 2^6464864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6464864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8064000).

6464864 is an abundant number, since it is smaller than the sum of its proper divisors (9663136).

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

6464864 is a wasteful number, since it uses less digits than its factorization.

6464864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 59 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 6464864 is about 2542.6096829832. The cubic root of 6464864 is about 186.2886795633.

The spelling of 6464864 in words is "six million, four hundred sixty-four thousand, eight hundred sixty-four".