1085985566 has 8 divisors (see below), whose sum is σ = 1630777080. Its totient is φ = 542393208.

The previous prime is 1085985553. The next prime is 1085985577. The reversal of 1085985566 is 6655895801.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297521 + ... + 301148.

It is an arithmetic number, because the mean of its divisors is an integer number (203847135).

Almost surely, 2^1085985566 is an apocalyptic number.

1085985566 is a deficient number, since it is larger than the sum of its proper divisors (544791514).

1085985566 is an equidigital number, since it uses as much as digits as its factorization.

1085985566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599578.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The square root of 1085985566 is about 32954.2951070115. The cubic root of 1085985566 is about 1027.8774797585.

The spelling of 1085985566 in words is "one billion, eighty-five million, nine hundred eighty-five thousand, five hundred sixty-six".