11878775 has 6 divisors (see below), whose sum is σ = 14729712. Its totient is φ = 9503000.

The previous prime is 11878759. The next prime is 11878829. The reversal of 11878775 is 57787811.

It is a happy number.

It is not a de Polignac number, because 11878775 - 2⁴ = 11878759 is a prime.

It is a super-2 number, since 2×11878775² = 282210591001250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237551 + ... + 237600.

It is an arithmetic number, because the mean of its divisors is an integer number (2454952).

Almost surely, 2^11878775 is an apocalyptic number.

11878775 is a deficient number, since it is larger than the sum of its proper divisors (2850937).

11878775 is an equidigital number, since it uses as much as digits as its factorization.

11878775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475161 (or 475156 counting only the distinct ones).

The product of its digits is 109760, while the sum is 44.

The square root of 11878775 is about 3446.5598790678. The cubic root of 11878775 is about 228.1693045869.

The spelling of 11878775 in words is "eleven million, eight hundred seventy-eight thousand, seven hundred seventy-five".