2387857 has 2 divisors, whose sum is σ = 2387858. Its totient is φ = 2387856.

The previous prime is 2387851. The next prime is 2387867. The reversal of 2387857 is 7587832.

2387857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2359296 + 28561 = 1536^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2387857 - 2⁷ = 2387729 is a prime.

It is a super-2 number, since 2×2387857² = 11403722104898, which contains 22 as substring.

2387857 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2387851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1193928 + 1193929.

It is an arithmetic number, because the mean of its divisors is an integer number (1193929).

2^2387857 is an apocalyptic number.

It is an amenable number.

2387857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2387857 is an equidigital number, since it uses as much as digits as its factorization.

2387857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 2387857 is about 1545.2692322052. The cubic root of 2387857 is about 133.6604046654.

The spelling of 2387857 in words is "two million, three hundred eighty-seven thousand, eight hundred fifty-seven".