196557 has 4 divisors (see below), whose sum is σ = 262080. Its totient is φ = 131036.

The previous prime is 196549. The next prime is 196561. The reversal of 196557 is 755691.

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, and also an emirpimes, since its reverse is a distinct semiprime: 755691 = 3 ⋅251897.

It is a cyclic number.

It is not a de Polignac number, because 196557 - 2³ = 196549 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196597) 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, 32757 + ... + 32762.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2¹⁹⁶⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

196557 is a deficient number, since it is larger than the sum of its proper divisors (65523).

196557 is an equidigital number, since it uses as much as digits as its factorization.

196557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65522.

The product of its digits is 9450, while the sum is 33.

The square root of 196557 is about 443.3474935082. The cubic root of 196557 is about 58.1428306956.

The spelling of 196557 in words is "one hundred ninety-six thousand, five hundred fifty-seven".