6693472639 has 8 divisors (see below), whose sum is σ = 7665394688. Its totient is φ = 5725478520.

The previous prime is 6693472619. The next prime is 6693472717. The reversal of 6693472639 is 9362743966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6693472639 - 2¹³ = 6693464447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6693472639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6693472619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978327 + ... + 985144.

It is an arithmetic number, because the mean of its divisors is an integer number (958174336).

Almost surely, 2^6693472639 is an apocalyptic number.

6693472639 is a deficient number, since it is larger than the sum of its proper divisors (971922049).

6693472639 is a wasteful number, since it uses less digits than its factorization.

6693472639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963965.

The product of its digits is 8817984, while the sum is 55.

The square root of 6693472639 is about 81813.6457994631. The cubic root of 6693472639 is about 1884.5912229149.

The spelling of 6693472639 in words is "six billion, six hundred ninety-three million, four hundred seventy-two thousand, six hundred thirty-nine".