11198865 has 16 divisors (see below), whose sum is σ = 18079488. Its totient is φ = 5918976.

The previous prime is 11198851. The next prime is 11198879. The reversal of 11198865 is 56889111.

It is an interprime number because it is at equal distance from previous prime (11198851) and next prime (11198879).

It is not a de Polignac number, because 11198865 - 2²³ = 2810257 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1609 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (1129968).

Almost surely, 2^11198865 is an apocalyptic number.

11198865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11198865 is a deficient number, since it is larger than the sum of its proper divisors (6880623).

11198865 is a wasteful number, since it uses less digits than its factorization.

11198865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728.

The product of its digits is 17280, while the sum is 39.

The square root of 11198865 is about 3346.4705287810. The cubic root of 11198865 is about 223.7302303517.

The spelling of 11198865 in words is "eleven million, one hundred ninety-eight thousand, eight hundred sixty-five".