6340645344 has 192 divisors, whose sum is σ = 19386501120. Its totient is φ = 1794240000.

The previous prime is 6340645343. The next prime is 6340645351. The reversal of 6340645344 is 4435460436.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340645343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1422319 + ... + 1426769.

It is an arithmetic number, because the mean of its divisors is an integer number (100971360).

Almost surely, 2^6340645344 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 6340645344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9693250560).

6340645344 is an abundant number, since it is smaller than the sum of its proper divisors (13045855776).

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

6340645344 is a wasteful number, since it uses less digits than its factorization.

6340645344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4565 (or 4557 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

The square root of 6340645344 is about 79628.1692870055. The cubic root of 6340645344 is about 1850.8781167547.

The spelling of 6340645344 in words is "six billion, three hundred forty million, six hundred forty-five thousand, three hundred forty-four".