196557317 has 4 divisors (see below), whose sum is σ = 214426176. Its totient is φ = 178688460.

The previous prime is 196557313. The next prime is 196557353. The reversal of 196557317 is 713755691.

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 a cyclic number.

It is not a de Polignac number, because 196557317 - 2² = 196557313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196557313) 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, 8934413 + ... + 8934434.

It is an arithmetic number, because the mean of its divisors is an integer number (53606544).

Almost surely, 2^196557317 is an apocalyptic number.

It is an amenable number.

196557317 is a deficient number, since it is larger than the sum of its proper divisors (17868859).

196557317 is a wasteful number, since it uses less digits than its factorization.

196557317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17868858.

The product of its digits is 198450, while the sum is 44.

The square root of 196557317 is about 14019.8900494975. The cubic root of 196557317 is about 581.4286195251.

The spelling of 196557317 in words is "one hundred ninety-six million, five hundred fifty-seven thousand, three hundred seventeen".