196696889 has 4 divisors (see below), whose sum is σ = 196849380. Its totient is φ = 196544400.

The previous prime is 196696867. The next prime is 196696933. The reversal of 196696889 is 988696691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988696691 = 103 ⋅9598997.

It can be written as a sum of positive squares in 2 ways, for example, as 18207289 + 178489600 = 4267^2 + 13360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196696889 is a prime.

It is a super-2 number, since 2×196696889² = 77379332284556642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196696849) 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 3 ways as a sum of consecutive naturals, for example, 74294 + ... + 76895.

It is an arithmetic number, because the mean of its divisors is an integer number (49212345).

Almost surely, 2^196696889 is an apocalyptic number.

It is an amenable number.

196696889 is a deficient number, since it is larger than the sum of its proper divisors (152491).

196696889 is a wasteful number, since it uses less digits than its factorization.

196696889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152490.

The product of its digits is 10077696, while the sum is 62.

The square root of 196696889 is about 14024.8668086367. The cubic root of 196696889 is about 581.5662078142.

The spelling of 196696889 in words is "one hundred ninety-six million, six hundred ninety-six thousand, eight hundred eighty-nine".