11699666 has 16 divisors (see below), whose sum is σ = 19199808. Its totient is φ = 5302800.

The previous prime is 11699609. The next prime is 11699669. The reversal of 11699666 is 66699611.

11699666 = 494² + 495² + ... + 537².

It is not an unprimeable number, because it can be changed into a prime (11699669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11411 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (1199988).

Almost surely, 2^11699666 is an apocalyptic number.

11699666 is a deficient number, since it is larger than the sum of its proper divisors (7500142).

11699666 is a wasteful number, since it uses less digits than its factorization.

11699666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its digits is 104976, while the sum is 44.

The square root of 11699666 is about 3420.4774520526. The cubic root of 11699666 is about 227.0167078079.

Subtracting 11699666 from its reverse (66699611), we obtain a palindrome (54999945).

The spelling of 11699666 in words is "eleven million, six hundred ninety-nine thousand, six hundred sixty-six".