1057686 has 16 divisors (see below), whose sum is σ = 2417664. Its totient is φ = 302184.

The previous prime is 1057681. The next prime is 1057699. The reversal of 1057686 is 6867501.

It is a super-2 number, since 2×1057686² = 2237399349192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057681) 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, 12550 + ... + 12633.

It is an arithmetic number, because the mean of its divisors is an integer number (151104).

2^1057686 is an apocalyptic number.

1057686 is an abundant number, since it is smaller than the sum of its proper divisors (1359978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1057686 is a wasteful number, since it uses less digits than its factorization.

1057686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25195.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1057686 is about 1028.4386223786. The cubic root of 1057686 is about 101.8870337197.

The spelling of 1057686 in words is "one million, fifty-seven thousand, six hundred eighty-six".