196823797 has 4 divisors (see below), whose sum is σ = 196960896. Its totient is φ = 196686700.

The previous prime is 196823791. The next prime is 196823801. The reversal of 196823797 is 797328691.

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: 797328691 = 883 ⋅902977.

It is a cyclic number.

It is not a de Polignac number, because 196823797 - 2³ = 196823789 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 (196823791) 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, 66373 + ... + 69274.

It is an arithmetic number, because the mean of its divisors is an integer number (49240224).

Almost surely, 2^196823797 is an apocalyptic number.

It is an amenable number.

196823797 is a deficient number, since it is larger than the sum of its proper divisors (137099).

196823797 is a wasteful number, since it uses less digits than its factorization.

196823797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137098.

The product of its digits is 1143072, while the sum is 52.

The square root of 196823797 is about 14029.3904714353. The cubic root of 196823797 is about 581.6912556096.

The spelling of 196823797 in words is "one hundred ninety-six million, eight hundred twenty-three thousand, seven hundred ninety-seven".