661132 has 12 divisors (see below), whose sum is σ = 1164240. Its totient is φ = 328496.

The previous prime is 661121. The next prime is 661139. The reversal of 661132 is 231166.

It is not an unprimeable number, because it can be changed into a prime (661139) 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, 369 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (97020).

2⁶⁶¹¹³² is an apocalyptic number.

It is an amenable number.

661132 is a deficient number, since it is larger than the sum of its proper divisors (503108).

661132 is a wasteful number, since it uses less digits than its factorization.

661132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1038 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 661132 is about 813.1002398229. The cubic root of 661132 is about 87.1156255373.

Adding to 661132 its reverse (231166), we get a palindrome (892298).

The spelling of 661132 in words is "six hundred sixty-one thousand, one hundred thirty-two".