11661099 has 16 divisors (see below), whose sum is σ = 16533792. Its totient is φ = 7285248.

The previous prime is 11661073. The next prime is 11661101. The reversal of 11661099 is 99016611.

It is not a de Polignac number, because 11661099 - 2⁸ = 11660843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11661019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18717 + ... + 19329.

It is an arithmetic number, because the mean of its divisors is an integer number (1033362).

Almost surely, 2^11661099 is an apocalyptic number.

11661099 is a deficient number, since it is larger than the sum of its proper divisors (4872693).

11661099 is a wasteful number, since it uses less digits than its factorization.

11661099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 11661099 is about 3414.8351351127. The cubic root of 11661099 is about 226.7669858225.

The spelling of 11661099 in words is "eleven million, six hundred sixty-one thousand, ninety-nine".