11691769 has 2 divisors, whose sum is σ = 11691770. Its totient is φ = 11691768.

The previous prime is 11691739. The next prime is 11691773. The reversal of 11691769 is 96719611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 131769 = 3400^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 11691769 - 2²¹ = 9594617 is a prime.

It is a super-2 number, since 2×11691769² = 273394924698722, which contains 22 as substring.

It is a nialpdrome in base 11.

It is not a weakly prime, because it can be changed into another prime (11691709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5845884 + 5845885.

It is an arithmetic number, because the mean of its divisors is an integer number (5845885).

Almost surely, 2^11691769 is an apocalyptic number.

It is an amenable number.

11691769 is a deficient number, since it is larger than the sum of its proper divisors (1).

11691769 is an equidigital number, since it uses as much as digits as its factorization.

11691769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 40.

The square root of 11691769 is about 3419.3228861867. The cubic root of 11691769 is about 226.9656193281.

The spelling of 11691769 in words is "eleven million, six hundred ninety-one thousand, seven hundred sixty-nine".