6699717 has 12 divisors (see below), whose sum is σ = 10246860. Its totient is φ = 4203648.

The previous prime is 6699703. The next prime is 6699727. The reversal of 6699717 is 7179966.

It can be written as a sum of positive squares in 2 ways, for example, as 5447556 + 1252161 = 2334^2 + 1119^2 .

It is not a de Polignac number, because 6699717 - 2¹⁵ = 6666949 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

6699717 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6699727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21742 + ... + 22047.

It is an arithmetic number, because the mean of its divisors is an integer number (853905).

Almost surely, 2^6699717 is an apocalyptic number.

It is an amenable number.

6699717 is a deficient number, since it is larger than the sum of its proper divisors (3547143).

6699717 is a wasteful number, since it uses less digits than its factorization.

6699717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43812 (or 43809 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 6699717 is about 2588.3811543125. The cubic root of 6699717 is about 188.5177087730.

Subtracting 6699717 from its reverse (7179966), we obtain a square (480249 = 693²).

The spelling of 6699717 in words is "six million, six hundred ninety-nine thousand, seven hundred seventeen".