6209724064 has 24 divisors (see below), whose sum is σ = 12646961460. Its totient is φ = 2997797376.

The previous prime is 6209724047. The next prime is 6209724091. The reversal of 6209724064 is 4604279026.

It can be written as a sum of positive squares in 2 ways, for example, as 5889027600 + 320696464 = 76740^2 + 17908^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3344829 + ... + 3346684.

Almost surely, 2^6209724064 is an apocalyptic number.

It is an amenable number.

6209724064 is an abundant number, since it is smaller than the sum of its proper divisors (6437237396).

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

6209724064 is a wasteful number, since it uses less digits than its factorization.

6209724064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6691552 (or 6691544 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 6209724064 is about 78801.8024159346. The cubic root of 6209724064 is about 1838.0504776989.

The spelling of 6209724064 in words is "six billion, two hundred nine million, seven hundred twenty-four thousand, sixty-four".