196868887 has 2 divisors, whose sum is σ = 196868888. Its totient is φ = 196868886.

The previous prime is 196868873. The next prime is 196868911. The reversal of 196868887 is 788868691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196868887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196868807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98434443 + 98434444.

It is an arithmetic number, because the mean of its divisors is an integer number (98434444).

Almost surely, 2^196868887 is an apocalyptic number.

196868887 is a deficient number, since it is larger than the sum of its proper divisors (1).

196868887 is an equidigital number, since it uses as much as digits as its factorization.

196868887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 61.

The square root of 196868887 is about 14030.9973629817. The cubic root of 196868887 is about 581.7356717430.

The spelling of 196868887 in words is "one hundred ninety-six million, eight hundred sixty-eight thousand, eight hundred eighty-seven".