99766619 has 2 divisors, whose sum is σ = 99766620. Its totient is φ = 99766618.

The previous prime is 99766613. The next prime is 99766621. The reversal of 99766619 is 91666799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99766619 - 2¹⁶ = 99701083 is a prime.

It is a super-2 number, since 2×99766619² = 19906756533382322, which contains 22 as substring.

Together with 99766621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99766613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49883309 + 49883310.

It is an arithmetic number, because the mean of its divisors is an integer number (49883310).

Almost surely, 2^99766619 is an apocalyptic number.

99766619 is a deficient number, since it is larger than the sum of its proper divisors (1).

99766619 is an equidigital number, since it uses as much as digits as its factorization.

99766619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 53.

The square root of 99766619 is about 9988.3241337073. The cubic root of 99766619 is about 463.7975158798.

The spelling of 99766619 in words is "ninety-nine million, seven hundred sixty-six thousand, six hundred nineteen".