699738769 has 2 divisors, whose sum is σ = 699738770. Its totient is φ = 699738768.

The previous prime is 699738763. The next prime is 699738797. The reversal of 699738769 is 967837996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 601966225 + 97772544 = 24535^2 + 9888^2 .

It is a cyclic number.

It is not a de Polignac number, because 699738769 - 2²¹ = 697641617 is a prime.

It is a super-2 number, since 2×699738769² = 979268689683270722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 699738769.

It is not a weakly prime, because it can be changed into another prime (699738763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349869384 + 349869385.

It is an arithmetic number, because the mean of its divisors is an integer number (349869385).

Almost surely, 2^699738769 is an apocalyptic number.

It is an amenable number.

699738769 is a deficient number, since it is larger than the sum of its proper divisors (1).

699738769 is an equidigital number, since it uses as much as digits as its factorization.

699738769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 64.

The square root of 699738769 is about 26452.5758481098. The cubic root of 699738769 is about 887.7935365476.

The spelling of 699738769 in words is "six hundred ninety-nine million, seven hundred thirty-eight thousand, seven hundred sixty-nine".