1080699887 has 2 divisors, whose sum is σ = 1080699888. Its totient is φ = 1080699886.

The previous prime is 1080699859. The next prime is 1080699889. The reversal of 1080699887 is 7889960801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1080699887 - 2¹⁰ = 1080698863 is a prime.

Together with 1080699889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1080699889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540349943 + 540349944.

It is an arithmetic number, because the mean of its divisors is an integer number (540349944).

Almost surely, 2^1080699887 is an apocalyptic number.

1080699887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080699887 is an equidigital number, since it uses as much as digits as its factorization.

1080699887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 1080699887 is about 32874.0001673055. Note that the first 3 decimals coincide. The cubic root of 1080699887 is about 1026.2071479142.

The spelling of 1080699887 in words is "one billion, eighty million, six hundred ninety-nine thousand, eight hundred eighty-seven".