11862857 has 2 divisors, whose sum is σ = 11862858. Its totient is φ = 11862856.

The previous prime is 11862839. The next prime is 11862869. The reversal of 11862857 is 75826811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6405961 + 5456896 = 2531^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 11862857 - 2¹⁸ = 11600713 is a prime.

It is equal to p₇₇₉₆₀₉ and since 11862857 and 779609 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11862857.

It is not a weakly prime, because it can be changed into another prime (11862157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5931428 + 5931429.

It is an arithmetic number, because the mean of its divisors is an integer number (5931429).

Almost surely, 2^11862857 is an apocalyptic number.

It is an amenable number.

11862857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11862857 is an equidigital number, since it uses as much as digits as its factorization.

11862857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 11862857 is about 3444.2498457574. The cubic root of 11862857 is about 228.0673405787.

The spelling of 11862857 in words is "eleven million, eight hundred sixty-two thousand, eight hundred fifty-seven".