2057687 has 4 divisors (see below), whose sum is σ = 2124096. Its totient is φ = 1991280.

The previous prime is 2057683. The next prime is 2057689. The reversal of 2057687 is 7867502.

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

It is a cyclic number.

It is not a de Polignac number, because 2057687 - 2² = 2057683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057683) 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, 33158 + ... + 33219.

It is an arithmetic number, because the mean of its divisors is an integer number (531024).

2^2057687 is an apocalyptic number.

2057687 is a deficient number, since it is larger than the sum of its proper divisors (66409).

2057687 is an equidigital number, since it uses as much as digits as its factorization.

2057687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66408.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 2057687 is about 1434.4640113994. The cubic root of 2057687 is about 127.1919926595.

It can be divided in two parts, 2057 and 687, that added together give a cube (2744 = 14³).

The spelling of 2057687 in words is "two million, fifty-seven thousand, six hundred eighty-seven".