11875905 has 12 divisors (see below), whose sum is σ = 20584980. Its totient is φ = 6333792.

The previous prime is 11875901. The next prime is 11875921. The reversal of 11875905 is 50957811.

It can be written as a sum of positive squares in 2 ways, for example, as 6718464 + 5157441 = 2592^2 + 2271^2 .

It is not a de Polignac number, because 11875905 - 2² = 11875901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11875905.

It is not an unprimeable number, because it can be changed into a prime (11875901) 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 11 ways as a sum of consecutive naturals, for example, 131910 + ... + 131999.

It is an arithmetic number, because the mean of its divisors is an integer number (1715415).

Almost surely, 2^11875905 is an apocalyptic number.

11875905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11875905 is a deficient number, since it is larger than the sum of its proper divisors (8709075).

11875905 is a wasteful number, since it uses less digits than its factorization.

11875905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263920 (or 263917 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 11875905 is about 3446.1434967221. The cubic root of 11875905 is about 228.1509273090.

The spelling of 11875905 in words is "eleven million, eight hundred seventy-five thousand, nine hundred five".