11880865 has 8 divisors (see below), whose sum is σ = 14748840. Its totient is φ = 9176832.

The previous prime is 11880863. The next prime is 11880893. The reversal of 11880865 is 56808811.

It can be written as a sum of positive squares in 4 ways, for example, as 2742336 + 9138529 = 1656^2 + 3023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11880865 - 2¹ = 11880863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11880863) 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, 40824 + ... + 41113.

It is an arithmetic number, because the mean of its divisors is an integer number (1843605).

Almost surely, 2^11880865 is an apocalyptic number.

It is an amenable number.

11880865 is a deficient number, since it is larger than the sum of its proper divisors (2867975).

11880865 is an equidigital number, since it uses as much as digits as its factorization.

11880865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81971.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 11880865 is about 3446.8630666158. The cubic root of 11880865 is about 228.1826854808.

The spelling of 11880865 in words is "eleven million, eight hundred eighty thousand, eight hundred sixty-five".