99975787 has 2 divisors, whose sum is σ = 99975788. Its totient is φ = 99975786.

The previous prime is 99975773. The next prime is 99975791. The reversal of 99975787 is 78757999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99975787 - 2²³ = 91587179 is a prime.

It is not a weakly prime, because it can be changed into another prime (99975287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49987893 + 49987894.

It is an arithmetic number, because the mean of its divisors is an integer number (49987894).

Almost surely, 2^99975787 is an apocalyptic number.

99975787 is a deficient number, since it is larger than the sum of its proper divisors (1).

99975787 is an equidigital number, since it uses as much as digits as its factorization.

99975787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 61.

The square root of 99975787 is about 9998.7892767075. The cubic root of 99975787 is about 464.1214180738.

The spelling of 99975787 in words is "ninety-nine million, nine hundred seventy-five thousand, seven hundred eighty-seven".