812061 has 12 divisors (see below), whose sum is σ = 1224288. Its totient is φ = 517704.

The previous prime is 812057. The next prime is 812081. The reversal of 812061 is 160218.

It is not a de Polignac number, because 812061 - 2² = 812057 is a prime.

812061 is a lucky number.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (102024).

2⁸¹²⁰⁶¹ is an apocalyptic number.

It is an amenable number.

812061 is a deficient number, since it is larger than the sum of its proper divisors (412227).

812061 is a wasteful number, since it uses less digits than its factorization.

812061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952 (or 3949 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 812061 is about 901.1442725779. The cubic root of 812061 is about 93.2959700220.

Adding to 812061 its reverse (160218), we get a palindrome (972279).

The spelling of 812061 in words is "eight hundred twelve thousand, sixty-one".