813206573 has 8 divisors (see below), whose sum is σ = 820424640. Its totient is φ = 806008320.

The previous prime is 813206567. The next prime is 813206591. The reversal of 813206573 is 375602318.

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

It is a cyclic number.

It is not a de Polignac number, because 813206573 - 2¹² = 813202477 is a prime.

It is a super-3 number, since 3×813206573³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813206503) 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 7 ways as a sum of consecutive naturals, for example, 84536 + ... + 93662.

It is an arithmetic number, because the mean of its divisors is an integer number (102553080).

Almost surely, 2^813206573 is an apocalyptic number.

It is an amenable number.

813206573 is a deficient number, since it is larger than the sum of its proper divisors (7218067).

813206573 is a wasteful number, since it uses less digits than its factorization.

813206573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 813206573 is about 28516.7770443997. Note that the first 3 decimals coincide. The cubic root of 813206573 is about 933.3982022799.

The spelling of 813206573 in words is "eight hundred thirteen million, two hundred six thousand, five hundred seventy-three".