812606 has 8 divisors (see below), whose sum is σ = 1223424. Its totient is φ = 404800.

The previous prime is 812599. The next prime is 812627. The reversal of 812606 is 606218.

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

It is a super-2 number, since 2×812606² = 1320657022472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

812606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (152928).

2⁸¹²⁶⁰⁶ is an apocalyptic number.

812606 is a deficient number, since it is larger than the sum of its proper divisors (410818).

812606 is a wasteful number, since it uses less digits than its factorization.

812606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 812606 is about 901.4466151692. The cubic root of 812606 is about 93.3168366535.

The spelling of 812606 in words is "eight hundred twelve thousand, six hundred six".