99968777 has 2 divisors, whose sum is σ = 99968778. Its totient is φ = 99968776.

The previous prime is 99968767. The next prime is 99968797. The reversal of 99968777 is 77786999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97199881 + 2768896 = 9859^2 + 1664^2 .

It is a cyclic number.

It is not a de Polignac number, because 99968777 - 2¹⁰ = 99967753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99968767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49984388 + 49984389.

It is an arithmetic number, because the mean of its divisors is an integer number (49984389).

Almost surely, 2^99968777 is an apocalyptic number.

It is an amenable number.

99968777 is a deficient number, since it is larger than the sum of its proper divisors (1).

99968777 is an equidigital number, since it uses as much as digits as its factorization.

99968777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12002256, while the sum is 62.

The square root of 99968777 is about 9998.4387281215. The cubic root of 99968777 is about 464.1105702233.

The spelling of 99968777 in words is "ninety-nine million, nine hundred sixty-eight thousand, seven hundred seventy-seven".