6199672644 has 81 divisors (see below), whose sum is σ = 17240033629. Its totient is φ = 1877113920.

The previous prime is 6199672639. The next prime is 6199672657. The reversal of 6199672644 is 4462769916.

It is a happy number.

The square root of 6199672644 is 78738.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3184344900 + 3015327744 = 56430^2 + 54912^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5196112 + ... + 5197304.

Almost surely, 2^6199672644 is an apocalyptic number.

6199672644 is the 78738-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6199672644

6199672644 is an abundant number, since it is smaller than the sum of its proper divisors (11040360985).

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

6199672644 is a wasteful number, since it uses less digits than its factorization.

6199672644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418 (or 1209 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The cubic root of 6199672644 is about 1837.0582170466.

The spelling of 6199672644 in words is "six billion, one hundred ninety-nine million, six hundred seventy-two thousand, six hundred forty-four".