1080056691 has 24 divisors (see below), whose sum is σ = 1876792320. Its totient is φ = 584691696.

The previous prime is 1080056639. The next prime is 1080056711. The reversal of 1080056691 is 1966500801.

1080056691 is a `hidden beast` number, since 1 + 0 + 8 + 0 + 0 + 566 + 91 = 666.

It is not a de Polignac number, because 1080056691 - 2¹⁰ = 1080055667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1080056591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 449955 + ... + 452348.

It is an arithmetic number, because the mean of its divisors is an integer number (78199680).

Almost surely, 2^1080056691 is an apocalyptic number.

1080056691 is a deficient number, since it is larger than the sum of its proper divisors (796735629).

1080056691 is a wasteful number, since it uses less digits than its factorization.

1080056691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902335 (or 902332 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1080056691 is about 32864.2159650888. The cubic root of 1080056691 is about 1026.0035195894.

The spelling of 1080056691 in words is "one billion, eighty million, fifty-six thousand, six hundred ninety-one".