699771947269 has 2 divisors, whose sum is σ = 699771947270. Its totient is φ = 699771947268.

The previous prime is 699771947239. The next prime is 699771947309. The reversal of 699771947269 is 962749177996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539181804100 + 160590143169 = 734290^2 + 400737^2 .

It is a cyclic number.

It is not a de Polignac number, because 699771947269 - 2¹¹ = 699771945221 is a prime.

It is a super-2 number, since 2×699771947269² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 699771947195 and 699771947204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699771947239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349885973634 + 349885973635.

It is an arithmetic number, because the mean of its divisors is an integer number (349885973635).

Almost surely, 2^699771947269 is an apocalyptic number.

It is an amenable number.

699771947269 is a deficient number, since it is larger than the sum of its proper divisors (1).

699771947269 is an equidigital number, since it uses as much as digits as its factorization.

699771947269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648121824, while the sum is 76.

The spelling of 699771947269 in words is "six hundred ninety-nine billion, seven hundred seventy-one million, nine hundred forty-seven thousand, two hundred sixty-nine".