1115660587 has 2 divisors, whose sum is σ = 1115660588. Its totient is φ = 1115660586.

The previous prime is 1115660521. The next prime is 1115660591. The reversal of 1115660587 is 7850665111.

It is a strong prime.

It is an emirp because it is prime and its reverse (7850665111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115660587 - 2¹⁹ = 1115136299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115660687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557830293 + 557830294.

It is an arithmetic number, because the mean of its divisors is an integer number (557830294).

Almost surely, 2^1115660587 is an apocalyptic number.

1115660587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115660587 is an equidigital number, since it uses as much as digits as its factorization.

1115660587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1115660587 is about 33401.5057594714. The cubic root of 1115660587 is about 1037.1558715850.

The spelling of 1115660587 in words is "one billion, one hundred fifteen million, six hundred sixty thousand, five hundred eighty-seven".