812087 has 8 divisors (see below), whose sum is σ = 861840. Its totient is φ = 763840.

The previous prime is 812081. The next prime is 812101. The reversal of 812087 is 780218.

812087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 812087 - 2¹⁴ = 795703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 812087.

It is not an unprimeable number, because it can be changed into a prime (812081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 848 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (107730).

2⁸¹²⁰⁸⁷ is an apocalyptic number.

812087 is a deficient number, since it is larger than the sum of its proper divisors (49753).

812087 is a wasteful number, since it uses less digits than its factorization.

812087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 812087 is about 901.1586985654. The cubic root of 812087 is about 93.2969657064.

The spelling of 812087 in words is "eight hundred twelve thousand, eighty-seven".