611389 has 2 divisors, whose sum is σ = 611390. Its totient is φ = 611388.

The previous prime is 611333. The next prime is 611393. The reversal of 611389 is 983116.

It is a happy number.

611389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416025 + 195364 = 645^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 611389 - 2⁹ = 610877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305694 + 305695.

It is an arithmetic number, because the mean of its divisors is an integer number (305695).

2⁶¹¹³⁸⁹ is an apocalyptic number.

It is an amenable number.

611389 is a deficient number, since it is larger than the sum of its proper divisors (1).

611389 is an equidigital number, since it uses as much as digits as its factorization.

611389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 611389 is about 781.9136781001. The cubic root of 611389 is about 84.8735837068.

It can be divided in two parts, 611 and 389, that added together give a cube (1000 = 10³).

The spelling of 611389 in words is "six hundred eleven thousand, three hundred eighty-nine".