612789 has 16 divisors (see below), whose sum is σ = 870912. Its totient is φ = 382448.

The previous prime is 612763. The next prime is 612791. The reversal of 612789 is 987216.

It is a cyclic number.

It is not a de Polignac number, because 612789 - 2¹¹ = 610741 is a prime.

It is an alternating number because its digits alternate between even and odd.

Its product of digits (6048) is a multiple of the sum of its prime divisors (216).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612719) 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 15 ways as a sum of consecutive naturals, for example, 5674 + ... + 5780.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁶¹²⁷⁸⁹ is an apocalyptic number.

612789 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

612789 is a deficient number, since it is larger than the sum of its proper divisors (258123).

612789 is a wasteful number, since it uses less digits than its factorization.

612789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216.

The product of its digits is 6048, while the sum is 33.

The square root of 612789 is about 782.8084056779. The cubic root of 612789 is about 84.9383174176.

It can be divided in two parts, 6127 and 89, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 612789 in words is "six hundred twelve thousand, seven hundred eighty-nine".