11506857 has 16 divisors (see below), whose sum is σ = 15719232. Its totient is φ = 7485120.

The previous prime is 11506849. The next prime is 11506861. The reversal of 11506857 is 75860511.

It is not a de Polignac number, because 11506857 - 2³ = 11506849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11506897) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41403 + ... + 41679.

It is an arithmetic number, because the mean of its divisors is an integer number (982452).

Almost surely, 2^11506857 is an apocalyptic number.

It is an amenable number.

11506857 is a deficient number, since it is larger than the sum of its proper divisors (4212375).

11506857 is a wasteful number, since it uses less digits than its factorization.

11506857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 11506857 is about 3392.1758503946. The cubic root of 11506857 is about 225.7627251050.

The spelling of 11506857 in words is "eleven million, five hundred six thousand, eight hundred fifty-seven".