6393040650 has 72 divisors (see below), whose sum is σ = 17231224140. Its totient is φ = 1699326720.

The previous prime is 6393040603. The next prime is 6393040673. The reversal of 6393040650 is 560403936.

It can be written as a sum of positive squares in 6 ways, for example, as 1005333849 + 5387706801 = 31707^2 + 73401^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 118156 + ... + 163544.

Almost surely, 2^6393040650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6393040650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8615612070).

6393040650 is an abundant number, since it is smaller than the sum of its proper divisors (10838183490).

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

6393040650 is a wasteful number, since it uses less digits than its factorization.

6393040650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45720 (or 45712 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 6393040650 is about 79956.4922317131. The cubic root of 6393040650 is about 1855.9623218437.

The spelling of 6393040650 in words is "six billion, three hundred ninety-three million, forty thousand, six hundred fifty".