1086778887 has 8 divisors (see below), whose sum is σ = 1463385840. Its totient is φ = 717345600.

The previous prime is 1086778807. The next prime is 1086778897. The reversal of 1086778887 is 7888776801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1086778887 - 2¹⁰ = 1086777863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1086778887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086778807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793062 + ... + 1793667.

It is an arithmetic number, because the mean of its divisors is an integer number (182923230).

Almost surely, 2^1086778887 is an apocalyptic number.

1086778887 is a deficient number, since it is larger than the sum of its proper divisors (376606953).

1086778887 is a wasteful number, since it uses less digits than its factorization.

1086778887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586833.

The product of its (nonzero) digits is 8429568, while the sum is 60.

The square root of 1086778887 is about 32966.3295955131. The cubic root of 1086778887 is about 1028.1277096987.

The spelling of 1086778887 in words is "one billion, eighty-six million, seven hundred seventy-eight thousand, eight hundred eighty-seven".