11684857 has 4 divisors (see below), whose sum is σ = 11905380. Its totient is φ = 11464336.

The previous prime is 11684843. The next prime is 11684879. The reversal of 11684857 is 75848611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3326976 + 8357881 = 1824^2 + 2891^2 .

It is a cyclic number.

It is not a de Polignac number, because 11684857 - 2¹¹ = 11682809 is a prime.

It is a super-2 number, since 2×11684857² = 273071766220898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11684887) 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, 110182 + ... + 110287.

It is an arithmetic number, because the mean of its divisors is an integer number (2976345).

Almost surely, 2^11684857 is an apocalyptic number.

It is an amenable number.

11684857 is a deficient number, since it is larger than the sum of its proper divisors (220523).

11684857 is an equidigital number, since it uses as much as digits as its factorization.

11684857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220522.

The product of its digits is 53760, while the sum is 40.

The square root of 11684857 is about 3418.3120103349. The cubic root of 11684857 is about 226.9208842782.

The spelling of 11684857 in words is "eleven million, six hundred eighty-four thousand, eight hundred fifty-seven".