1057986 has 24 divisors (see below), whose sum is σ = 2337660. Its totient is φ = 345696.

The previous prime is 1057981. The next prime is 1057993. The reversal of 1057986 is 6897501.

1057986 is a `hidden beast` number, since 1 + 0 + 579 + 86 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1010025 + 47961 = 1005^2 + 219^2 .

It is a super-2 number, since 2×1057986² = 2238668752392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057986.

It is not an unprimeable number, because it can be changed into a prime (1057981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400 + ... + 1508.

2^1057986 is an apocalyptic number.

1057986 is an abundant number, since it is smaller than the sum of its proper divisors (1279674).

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

1057986 is a wasteful number, since it uses less digits than its factorization.

1057986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1057986 is about 1028.5844642031. The cubic root of 1057986 is about 101.8966658224.

The spelling of 1057986 in words is "one million, fifty-seven thousand, nine hundred eighty-six".