6716993639 has 4 divisors (see below), whose sum is σ = 7070519640. Its totient is φ = 6363467640.

The previous prime is 6716993617. The next prime is 6716993713. The reversal of 6716993639 is 9363996176.

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 6716993639 - 2⁸ = 6716993383 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 (6716993839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176762972 + ... + 176763009.

It is an arithmetic number, because the mean of its divisors is an integer number (1767629910).

Almost surely, 2^6716993639 is an apocalyptic number.

6716993639 is a deficient number, since it is larger than the sum of its proper divisors (353526001).

6716993639 is a wasteful number, since it uses less digits than its factorization.

6716993639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353526000.

The product of its digits is 9920232, while the sum is 59.

The square root of 6716993639 is about 81957.2671518518. The cubic root of 6716993639 is about 1886.7961396113.

The spelling of 6716993639 in words is "six billion, seven hundred sixteen million, nine hundred ninety-three thousand, six hundred thirty-nine".