813684485 has 16 divisors (see below), whose sum is σ = 1001341440. Its totient is φ = 634401600.

The previous prime is 813684439. The next prime is 813684491. The reversal of 813684485 is 584486318.

It is not a de Polignac number, because 813684485 - 2⁸ = 813684229 is a prime.

It is a super-2 number, since 2×813684485² = 1324164882259430450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99035 + ... + 106935.

It is an arithmetic number, because the mean of its divisors is an integer number (62583840).

Almost surely, 2^813684485 is an apocalyptic number.

It is an amenable number.

813684485 is a deficient number, since it is larger than the sum of its proper divisors (187656955).

813684485 is a wasteful number, since it uses less digits than its factorization.

813684485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428.

The product of its digits is 737280, while the sum is 47.

The square root of 813684485 is about 28525.1553019436. The cubic root of 813684485 is about 933.5810155442.

The spelling of 813684485 in words is "eight hundred thirteen million, six hundred eighty-four thousand, four hundred eighty-five".