6199678021 has 16 divisors (see below), whose sum is σ = 6459243264. Its totient is φ = 5945727424.

The previous prime is 6199678013. The next prime is 6199678049. The reversal of 6199678021 is 1208769916.

It is a cyclic number.

It is not a de Polignac number, because 6199678021 - 2³ = 6199678013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6199678061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3718230 + ... + 3719896.

It is an arithmetic number, because the mean of its divisors is an integer number (403702704).

Almost surely, 2^6199678021 is an apocalyptic number.

It is an amenable number.

6199678021 is a deficient number, since it is larger than the sum of its proper divisors (259565243).

6199678021 is a wasteful number, since it uses less digits than its factorization.

6199678021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 6199678021 is about 78738.0341448782. The cubic root of 6199678021 is about 1837.0587481423.

The spelling of 6199678021 in words is "six billion, one hundred ninety-nine million, six hundred seventy-eight thousand, twenty-one".