612261 has 12 divisors (see below), whose sum is σ = 952588. Its totient is φ = 376704.

The previous prime is 612259. The next prime is 612263. The reversal of 612261 is 162216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (612259) and next prime (612263).

It can be written as a sum of positive squares in 2 ways, for example, as 367236 + 245025 = 606^2 + 495^2 .

It is not a de Polignac number, because 612261 - 2¹ = 612259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612263) 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, 2500 + ... + 2733.

2⁶¹²²⁶¹ is an apocalyptic number.

It is an amenable number.

612261 is a deficient number, since it is larger than the sum of its proper divisors (340327).

612261 is a wasteful number, since it uses less digits than its factorization.

612261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252 (or 5249 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 612261 is about 782.4710857278. The cubic root of 612261 is about 84.9139151527.

Adding to 612261 its reverse (162216), we get a palindrome (774477).

The spelling of 612261 in words is "six hundred twelve thousand, two hundred sixty-one".