699161191669 has 2 divisors, whose sum is σ = 699161191670. Its totient is φ = 699161191668.

The previous prime is 699161191649. The next prime is 699161191681. The reversal of 699161191669 is 966191161996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372991132900 + 326170058769 = 610730^2 + 571113^2 .

It is a cyclic number.

It is not a de Polignac number, because 699161191669 - 2³⁷ = 561722238197 is a prime.

It is a super-2 number, since 2×699161191669² (a number of 24 digits) contains 22 as substring.

699161191669 is a strobogrammatic number because it is the same when read upside-down.

It is a self number, because there is not a number n which added to its sum of digits gives 699161191669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699161191649) 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, 349580595834 + 349580595835.

It is an arithmetic number, because the mean of its divisors is an integer number (349580595835).

Almost surely, 2^699161191669 is an apocalyptic number.

It is an amenable number.

699161191669 is a deficient number, since it is larger than the sum of its proper divisors (1).

699161191669 is an equidigital number, since it uses as much as digits as its factorization.

699161191669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8503056, while the sum is 64.

The spelling of 699161191669 in words is "six hundred ninety-nine billion, one hundred sixty-one million, one hundred ninety-one thousand, six hundred sixty-nine".