2066857 has 8 divisors (see below), whose sum is σ = 2286536. Its totient is φ = 1855872.

The previous prime is 2066833. The next prime is 2066879. The reversal of 2066857 is 7586602.

It can be written as a sum of positive squares in 4 ways, for example, as 379456 + 1687401 = 616^2 + 1299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2066857 - 2¹¹ = 2064809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1668 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (285817).

2^2066857 is an apocalyptic number.

It is an amenable number.

2066857 is a deficient number, since it is larger than the sum of its proper divisors (219679).

2066857 is a wasteful number, since it uses less digits than its factorization.

2066857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2066857 is about 1437.6567740598. The cubic root of 2066857 is about 127.3806546946.

The spelling of 2066857 in words is "two million, sixty-six thousand, eight hundred fifty-seven".