1133661 has 4 divisors (see below), whose sum is σ = 1511552. Its totient is φ = 755772.

The previous prime is 1133659. The next prime is 1133677. The reversal of 1133661 is 1663311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1133661 - 2¹ = 1133659 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133621) 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, 188941 + ... + 188946.

It is an arithmetic number, because the mean of its divisors is an integer number (377888).

2^1133661 is an apocalyptic number.

It is an amenable number.

1133661 is a deficient number, since it is larger than the sum of its proper divisors (377891).

1133661 is an equidigital number, since it uses as much as digits as its factorization.

1133661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377890.

The product of its digits is 324, while the sum is 21.

The square root of 1133661 is about 1064.7351783425. The cubic root of 1133661 is about 104.2704070144.

Adding to 1133661 its reverse (1663311), we get a palindrome (2796972).

The spelling of 1133661 in words is "one million, one hundred thirty-three thousand, six hundred sixty-one".