699749717 has 4 divisors (see below), whose sum is σ = 701281356. Its totient is φ = 698218080.

The previous prime is 699749711. The next prime is 699749737. The reversal of 699749717 is 717947996.

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

It can be written as a sum of positive squares in 2 ways, for example, as 594091876 + 105657841 = 24374^2 + 10279^2 .

It is a cyclic number.

It is not a de Polignac number, because 699749717 - 2¹² = 699745621 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 (699749711) 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, 765134 + ... + 766047.

It is an arithmetic number, because the mean of its divisors is an integer number (175320339).

Almost surely, 2^699749717 is an apocalyptic number.

It is an amenable number.

699749717 is a deficient number, since it is larger than the sum of its proper divisors (1531639).

699749717 is a wasteful number, since it uses less digits than its factorization.

699749717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531638.

The product of its digits is 6001128, while the sum is 59.

The square root of 699749717 is about 26452.7827836695. The cubic root of 699749717 is about 887.7981666149.

The spelling of 699749717 in words is "six hundred ninety-nine million, seven hundred forty-nine thousand, seven hundred seventeen".