612081 has 12 divisors (see below), whose sum is σ = 903552. Its totient is φ = 399096.

The previous prime is 612071. The next prime is 612083. The reversal of 612081 is 180216.

It is not a de Polignac number, because 612081 - 2⁵ = 612049 is a prime.

It is a super-2 number, since 2×612081² = 749286301122, which contains 22 as substring.

It is a Curzon number.

612081 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 612081.

It is not an unprimeable number, because it can be changed into a prime (612083) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 301 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (75296).

2⁶¹²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

612081 is a deficient number, since it is larger than the sum of its proper divisors (291471).

612081 is a wasteful number, since it uses less digits than its factorization.

612081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500 (or 1497 counting only the distinct ones).

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

The square root of 612081 is about 782.3560570482. The cubic root of 612081 is about 84.9055929923.

Adding to 612081 its reverse (180216), we get a palindrome (792297).

The spelling of 612081 in words is "six hundred twelve thousand, eighty-one".