813066 has 8 divisors (see below), whose sum is σ = 1626144. Its totient is φ = 271020.

The previous prime is 813061. The next prime is 813083. The reversal of 813066 is 660318.

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

813066 is an admirable number.

It is a super-2 number, since 2×813066² = 1322152640712, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (813061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67750 + ... + 67761.

It is an arithmetic number, because the mean of its divisors is an integer number (203268).

2⁸¹³⁰⁶⁶ is an apocalyptic number.

813066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813066 is a wasteful number, since it uses less digits than its factorization.

813066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135516.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 813066 is about 901.7017245187. The cubic root of 813066 is about 93.3344415968.

The spelling of 813066 in words is "eight hundred thirteen thousand, sixty-six".