611089 has 4 divisors (see below), whose sum is σ = 612900. Its totient is φ = 609280.

The previous prime is 611081. The next prime is 611101. The reversal of 611089 is 980116.

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 230400 + 380689 = 480^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 611089 - 2³ = 611081 is a prime.

It is an Ulam number.

It is a Duffinian number.

611089 is a lucky number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611081) 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, 232 + ... + 1129.

It is an arithmetic number, because the mean of its divisors is an integer number (153225).

2⁶¹¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

611089 is a deficient number, since it is larger than the sum of its proper divisors (1811).

611089 is a wasteful number, since it uses less digits than its factorization.

611089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 611089 is about 781.7218175285. The cubic root of 611089 is about 84.8596993436.

The spelling of 611089 in words is "six hundred eleven thousand, eighty-nine".