864197424 has 80 divisors (see below), whose sum is σ = 2511292640. Its totient is φ = 288054144.

The previous prime is 864197407. The next prime is 864197429. The reversal of 864197424 is 424791468.

It is a self number, because there is not a number n which added to its sum of digits gives 864197424.

It is not an unprimeable number, because it can be changed into a prime (864197429) by changing a digit.

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, 22644 + ... + 47340.

It is an arithmetic number, because the mean of its divisors is an integer number (31391158).

Almost surely, 2^864197424 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 864197424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255646320).

864197424 is an abundant number, since it is smaller than the sum of its proper divisors (1647095216).

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

864197424 is an equidigital number, since it uses as much as digits as its factorization.

864197424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24726 (or 24702 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 864197424 is about 29397.2349720174. The cubic root of 864197424 is about 952.5131698842.

The spelling of 864197424 in words is "eight hundred sixty-four million, one hundred ninety-seven thousand, four hundred twenty-four".