99722587 has 2 divisors, whose sum is σ = 99722588. Its totient is φ = 99722586.

The previous prime is 99722573. The next prime is 99722611. The reversal of 99722587 is 78522799.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99722587 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99722587.

It is not a weakly prime, because it can be changed into another prime (99782587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49861293 + 49861294.

It is an arithmetic number, because the mean of its divisors is an integer number (49861294).

Almost surely, 2^99722587 is an apocalyptic number.

99722587 is a deficient number, since it is larger than the sum of its proper divisors (1).

99722587 is an equidigital number, since it uses as much as digits as its factorization.

99722587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The square root of 99722587 is about 9986.1197168870. The cubic root of 99722587 is about 463.7292734905.

The spelling of 99722587 in words is "ninety-nine million, seven hundred twenty-two thousand, five hundred eighty-seven".