6245734644 has 108 divisors (see below), whose sum is σ = 16813909476. Its totient is φ = 1954423296.

The previous prime is 6245734633. The next prime is 6245734667. The reversal of 6245734644 is 4464375426.

It can be written as a sum of positive squares in 2 ways, for example, as 324432144 + 5921302500 = 18012^2 + 76950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6245734644.

It is a congruent number.

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, 1466422 + ... + 1470674.

It is an arithmetic number, because the mean of its divisors is an integer number (155684347).

Almost surely, 2^6245734644 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 6245734644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8406954738).

6245734644 is an abundant number, since it is smaller than the sum of its proper divisors (10568174832).

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

6245734644 is a wasteful number, since it uses less digits than its factorization.

6245734644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414 (or 4390 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 45.

The square root of 6245734644 is about 79029.9604200837. The cubic root of 6245734644 is about 1841.5966218040.

The spelling of 6245734644 in words is "six billion, two hundred forty-five million, seven hundred thirty-four thousand, six hundred forty-four".