1099866587 has 2 divisors, whose sum is σ = 1099866588. Its totient is φ = 1099866586.

The previous prime is 1099866569. The next prime is 1099866617. The reversal of 1099866587 is 7856689901.

It is a weak prime.

It is an emirp because it is prime and its reverse (7856689901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1099866587 - 2²² = 1095672283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099866517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549933293 + 549933294.

It is an arithmetic number, because the mean of its divisors is an integer number (549933294).

Almost surely, 2^1099866587 is an apocalyptic number.

1099866587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099866587 is an equidigital number, since it uses as much as digits as its factorization.

1099866587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The square root of 1099866587 is about 33164.2365659154. The cubic root of 1099866587 is about 1032.2383805609.

The spelling of 1099866587 in words is "one billion, ninety-nine million, eight hundred sixty-six thousand, five hundred eighty-seven".