6615982799 has 4 divisors (see below), whose sum is σ = 6964192440. Its totient is φ = 6267773160.

The previous prime is 6615982783. The next prime is 6615982817. The reversal of 6615982799 is 9972895166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6615982799 - 2⁴ = 6615982783 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 (6615982199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174104792 + ... + 174104829.

It is an arithmetic number, because the mean of its divisors is an integer number (1741048110).

Almost surely, 2^6615982799 is an apocalyptic number.

6615982799 is a deficient number, since it is larger than the sum of its proper divisors (348209641).

6615982799 is a wasteful number, since it uses less digits than its factorization.

6615982799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348209640.

The product of its digits is 14696640, while the sum is 62.

The square root of 6615982799 is about 81338.6918938337. The cubic root of 6615982799 is about 1877.2903849722.

The spelling of 6615982799 in words is "six billion, six hundred fifteen million, nine hundred eighty-two thousand, seven hundred ninety-nine".