99963761 has 2 divisors, whose sum is σ = 99963762. Its totient is φ = 99963760.

The previous prime is 99963739. The next prime is 99963779. The reversal of 99963761 is 16736999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58232161 + 41731600 = 7631^2 + 6460^2 .

It is a cyclic number.

It is not a de Polignac number, because 99963761 - 2⁶ = 99963697 is a prime.

It is not a weakly prime, because it can be changed into another prime (99966761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49981880 + 49981881.

It is an arithmetic number, because the mean of its divisors is an integer number (49981881).

Almost surely, 2^99963761 is an apocalyptic number.

It is an amenable number.

99963761 is a deficient number, since it is larger than the sum of its proper divisors (1).

99963761 is an equidigital number, since it uses as much as digits as its factorization.

99963761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 50.

The square root of 99963761 is about 9998.1878858121. The cubic root of 99963761 is about 464.1028077411.

The spelling of 99963761 in words is "ninety-nine million, nine hundred sixty-three thousand, seven hundred sixty-one".