6399850824 has 160 divisors (see below), whose sum is σ = 18353744640. Its totient is φ = 2082931200.

The previous prime is 6399850801. The next prime is 6399850867. The reversal of 6399850824 is 4280589936.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5198289 + ... + 5199519.

It is an arithmetic number, because the mean of its divisors is an integer number (114710904).

Almost surely, 2^6399850824 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 6399850824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9176872320).

6399850824 is an abundant number, since it is smaller than the sum of its proper divisors (11953893816).

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

6399850824 is a wasteful number, since it uses less digits than its factorization.

6399850824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 6399850824 is about 79999.0676445670. The cubic root of 6399850824 is about 1856.6211080485.

The spelling of 6399850824 in words is "six billion, three hundred ninety-nine million, eight hundred fifty thousand, eight hundred twenty-four".