864697344 has 176 divisors, whose sum is σ = 2672563200. Its totient is φ = 243449856.

The previous prime is 864697331. The next prime is 864697369. The reversal of 864697344 is 443796468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698562 + ... + 1699070.

Almost surely, 2^864697344 is an apocalyptic number.

864697344 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864697344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336281600).

864697344 is an abundant number, since it is smaller than the sum of its proper divisors (1807865856).

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

864697344 is a wasteful number, since it uses less digits than its factorization.

864697344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 600 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The square root of 864697344 is about 29405.7365831907. The cubic root of 864697344 is about 952.6968040786.

The spelling of 864697344 in words is "eight hundred sixty-four million, six hundred ninety-seven thousand, three hundred forty-four".