612289 has 4 divisors (see below), whose sum is σ = 648324. Its totient is φ = 576256.

The previous prime is 612263. The next prime is 612301. The reversal of 612289 is 982216.

It is a happy number.

612289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 211600 = 633^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 612289 - 2¹⁵ = 579521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17992 + ... + 18025.

It is an arithmetic number, because the mean of its divisors is an integer number (162081).

2⁶¹²²⁸⁹ is an apocalyptic number.

It is an amenable number.

612289 is a deficient number, since it is larger than the sum of its proper divisors (36035).

612289 is a wasteful number, since it uses less digits than its factorization.

612289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36034.

The product of its digits is 1728, while the sum is 28.

The square root of 612289 is about 782.4889775582. The cubic root of 612289 is about 84.9152095644.

The spelling of 612289 in words is "six hundred twelve thousand, two hundred eighty-nine".