11868257 has 4 divisors (see below), whose sum is σ = 12251136. Its totient is φ = 11485380.

The previous prime is 11868251. The next prime is 11868281. The reversal of 11868257 is 75286811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75286811 = 337 ⋅223403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11868257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11868257.

It is not an unprimeable number, because it can be changed into a prime (11868251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191393 + ... + 191454.

It is an arithmetic number, because the mean of its divisors is an integer number (3062784).

Almost surely, 2^11868257 is an apocalyptic number.

It is an amenable number.

11868257 is a deficient number, since it is larger than the sum of its proper divisors (382879).

11868257 is an equidigital number, since it uses as much as digits as its factorization.

11868257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382878.

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

The square root of 11868257 is about 3445.0336718238. The cubic root of 11868257 is about 228.1019409231.

The spelling of 11868257 in words is "eleven million, eight hundred sixty-eight thousand, two hundred fifty-seven".