1011666 has 16 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 333744.

The previous prime is 1011649. The next prime is 1011667. The reversal of 1011666 is 6661101.

It is not an unprimeable number, because it can be changed into a prime (1011667) 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, 201 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (127764).

2^1011666 is an apocalyptic number.

1011666 is an abundant number, since it is smaller than the sum of its proper divisors (1032558).

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

1011666 is a wasteful number, since it uses less digits than its factorization.

1011666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1011666 is about 1005.8160865685. The cubic root of 1011666 is about 100.3873642188.

Adding to 1011666 its reverse (6661101), we get a palindrome (7672767).

The spelling of 1011666 in words is "one million, eleven thousand, six hundred sixty-six".