196609877 has 2 divisors, whose sum is σ = 196609878. Its totient is φ = 196609876.

The previous prime is 196609873. The next prime is 196609901. The reversal of 196609877 is 778906691.

It is a happy number.

196609877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118570321 + 78039556 = 10889^2 + 8834^2 .

It is a cyclic number.

It is not a de Polignac number, because 196609877 - 2² = 196609873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196609871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98304938 + 98304939.

It is an arithmetic number, because the mean of its divisors is an integer number (98304939).

Almost surely, 2^196609877 is an apocalyptic number.

It is an amenable number.

196609877 is a deficient number, since it is larger than the sum of its proper divisors (1).

196609877 is an equidigital number, since it uses as much as digits as its factorization.

196609877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 196609877 is about 14021.7644039543. The cubic root of 196609877 is about 581.4804401428.

The spelling of 196609877 in words is "one hundred ninety-six million, six hundred nine thousand, eight hundred seventy-seven".