864784297608 has 512 divisors, whose sum is σ = 2929927680000. Its totient is φ = 205913456640.

The previous prime is 864784297583. The next prime is 864784297621. The reversal of 864784297608 is 806792487468.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 250733068 + ... + 250736516.

It is an arithmetic number, because the mean of its divisors is an integer number (5722515000).

Almost surely, 2^864784297608 is an apocalyptic number.

864784297608 is a gapful number since it is divisible by the number (88) 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 864784297608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464963840000).

864784297608 is an abundant number, since it is smaller than the sum of its proper divisors (2065143382392).

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

864784297608 is a wasteful number, since it uses less digits than its factorization.

864784297608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 260112384, while the sum is 69.

The spelling of 864784297608 in words is "eight hundred sixty-four billion, seven hundred eighty-four million, two hundred ninety-seven thousand, six hundred eight".