813062985 has 16 divisors (see below), whose sum is σ = 1486743936. Its totient is φ = 371685888.

The previous prime is 813062981. The next prime is 813063019. The reversal of 813062985 is 589260318.

813062985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 813062985 - 2² = 813062981 is a prime.

It is a super-2 number, since 2×813062985² = 1322142835154220450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (813062981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3871624 + ... + 3871833.

It is an arithmetic number, because the mean of its divisors is an integer number (92921496).

Almost surely, 2^813062985 is an apocalyptic number.

It is an amenable number.

813062985 is a deficient number, since it is larger than the sum of its proper divisors (673680951).

813062985 is a wasteful number, since it uses less digits than its factorization.

813062985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7743472.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 813062985 is about 28514.2593275715. The cubic root of 813062985 is about 933.3432622952.

The spelling of 813062985 in words is "eight hundred thirteen million, sixty-two thousand, nine hundred eighty-five".