11690811 has 20 divisors (see below), whose sum is σ = 19053144. Its totient is φ = 7084800.

The previous prime is 11690803. The next prime is 11690837. The reversal of 11690811 is 11809611.

It is not a de Polignac number, because 11690811 - 2³ = 11690803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (11690881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5670 + ... + 7451.

Almost surely, 2^11690811 is an apocalyptic number.

11690811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11690811 is a deficient number, since it is larger than the sum of its proper divisors (7362333).

11690811 is a wasteful number, since it uses less digits than its factorization.

11690811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13144 (or 13135 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 11690811 is about 3419.1827971023. The cubic root of 11690811 is about 226.9594201236.

The spelling of 11690811 in words is "eleven million, six hundred ninety thousand, eight hundred eleven".