1661132 has 24 divisors (see below), whose sum is σ = 3339840. Its totient is φ = 714960.

The previous prime is 1661123. The next prime is 1661137. The reversal of 1661132 is 2311661.

It is not an unprimeable number, because it can be changed into a prime (1661137) 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, 158 + ... + 1829.

It is an arithmetic number, because the mean of its divisors is an integer number (139160).

2^1661132 is an apocalyptic number.

It is an amenable number.

1661132 is an abundant number, since it is smaller than the sum of its proper divisors (1678708).

1661132 is a wasteful number, since it uses less digits than its factorization.

1661132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021 (or 2019 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1661132 is about 1288.8490990027. The cubic root of 1661132 is about 118.4317231468.

Adding to 1661132 its reverse (2311661), we get a palindrome (3972793).

The spelling of 1661132 in words is "one million, six hundred sixty-one thousand, one hundred thirty-two".