196920565 has 8 divisors (see below), whose sum is σ = 236397240. Its totient is φ = 157474752.

The previous prime is 196920551. The next prime is 196920569. The reversal of 196920565 is 565029691.

It can be written as a sum of positive squares in 4 ways, for example, as 20376196 + 176544369 = 4514^2 + 13287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196920565 - 2⁵ = 196920533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196920569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10047 + ... + 22243.

It is an arithmetic number, because the mean of its divisors is an integer number (29549655).

Almost surely, 2^196920565 is an apocalyptic number.

It is an amenable number.

196920565 is a deficient number, since it is larger than the sum of its proper divisors (39476675).

196920565 is a wasteful number, since it uses less digits than its factorization.

196920565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15431.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 196920565 is about 14032.8388075970. The cubic root of 196920565 is about 581.7865690795.

The spelling of 196920565 in words is "one hundred ninety-six million, nine hundred twenty thousand, five hundred sixty-five".