812015 has 12 divisors (see below), whose sum is σ = 1021944. Its totient is φ = 619344.

The previous prime is 812011. The next prime is 812033. The reversal of 812015 is 510218.

It is not a de Polignac number, because 812015 - 2² = 812011 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 811984 and 812002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812011) 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 11 ways as a sum of consecutive naturals, for example, 2492 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (85162).

2⁸¹²⁰¹⁵ is an apocalyptic number.

812015 is a deficient number, since it is larger than the sum of its proper divisors (209929).

812015 is a wasteful number, since it uses less digits than its factorization.

812015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 812015 is about 901.1187491113. The cubic root of 812015 is about 93.2942083745.

The spelling of 812015 in words is "eight hundred twelve thousand, fifteen".