6450688794 has 64 divisors (see below), whose sum is σ = 14979841920. Its totient is φ = 1830174720.

The previous prime is 6450688789. The next prime is 6450688819. The reversal of 6450688794 is 4978860546.

It is a super-2 number, since 2×6450688794² = 83222771834074348872, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201652 + ... + 231440.

It is an arithmetic number, because the mean of its divisors is an integer number (234060030).

Almost surely, 2^6450688794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6450688794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7489920960).

6450688794 is an abundant number, since it is smaller than the sum of its proper divisors (8529153126).

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

6450688794 is a wasteful number, since it uses less digits than its factorization.

6450688794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30015.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The square root of 6450688794 is about 80316.1801507019. The cubic root of 6450688794 is about 1861.5242442604.

The spelling of 6450688794 in words is "six billion, four hundred fifty million, six hundred eighty-eight thousand, seven hundred ninety-four".