11990806 has 16 divisors (see below), whose sum is σ = 18406080. Its totient is φ = 5856840.

The previous prime is 11990801. The next prime is 11990813. The reversal of 11990806 is 60809911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36061 + ... + 36391.

It is an arithmetic number, because the mean of its divisors is an integer number (1150380).

Almost surely, 2^11990806 is an apocalyptic number.

11990806 is a deficient number, since it is larger than the sum of its proper divisors (6415274).

11990806 is a wasteful number, since it uses less digits than its factorization.

11990806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 11990806 is about 3462.7743212632. The cubic root of 11990806 is about 228.8843641122.

The spelling of 11990806 in words is "eleven million, nine hundred ninety thousand, eight hundred six".