661196 has 12 divisors (see below), whose sum is σ = 1182048. Its totient is φ = 323472.

The previous prime is 661189. The next prime is 661201. The reversal of 661196 is 691166.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 661196.

It is an unprimeable number.

661196 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571 + ... + 1946.

It is an arithmetic number, because the mean of its divisors is an integer number (98504).

2⁶⁶¹¹⁹⁶ is an apocalyptic number.

It is an amenable number.

661196 is a deficient number, since it is larger than the sum of its proper divisors (520852).

661196 is a wasteful number, since it uses less digits than its factorization.

661196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568 (or 3566 counting only the distinct ones).

The product of its digits is 1944, while the sum is 29.

The square root of 661196 is about 813.1395944117. The cubic root of 661196 is about 87.1184364839.

The spelling of 661196 in words is "six hundred sixty-one thousand, one hundred ninety-six".