99975761 has 2 divisors, whose sum is σ = 99975762. Its totient is φ = 99975760.

The previous prime is 99975709. The next prime is 99975769. The reversal of 99975761 is 16757999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91565761 + 8410000 = 9569^2 + 2900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99975761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99975769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49987880 + 49987881.

It is an arithmetic number, because the mean of its divisors is an integer number (49987881).

Almost surely, 2^99975761 is an apocalyptic number.

It is an amenable number.

99975761 is a deficient number, since it is larger than the sum of its proper divisors (1).

99975761 is an equidigital number, since it uses as much as digits as its factorization.

99975761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1071630, while the sum is 53.

The square root of 99975761 is about 9998.7879765500. The cubic root of 99975761 is about 464.1213778402.

The spelling of 99975761 in words is "ninety-nine million, nine hundred seventy-five thousand, seven hundred sixty-one".