1056666 has 64 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 285120.

The previous prime is 1056659. The next prime is 1056667. The reversal of 1056666 is 6666501.

It is a super-2 number, since 2×1056666² = 2233086071112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34071 + ... + 34101.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2^1056666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1056666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290240).

1056666 is an abundant number, since it is smaller than the sum of its proper divisors (1523814).

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

1056666 is a wasteful number, since it uses less digits than its factorization.

1056666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1056666 is about 1027.9426054017. The cubic root of 1056666 is about 101.8542709402.

The spelling of 1056666 in words is "one million, fifty-six thousand, six hundred sixty-six".