612817 has 2 divisors, whose sum is σ = 612818. Its totient is φ = 612816.

The previous prime is 612811. The next prime is 612823. The reversal of 612817 is 718216.

612817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (612811) and next prime (612823).

It can be written as a sum of positive squares in only one way, i.e., 358801 + 254016 = 599^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 612817 - 2³ = 612809 is a prime.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 612791 and 612800.

It is not a weakly prime, because it can be changed into another prime (612811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306408 + 306409.

It is an arithmetic number, because the mean of its divisors is an integer number (306409).

2⁶¹²⁸¹⁷ is an apocalyptic number.

It is an amenable number.

612817 is a deficient number, since it is larger than the sum of its proper divisors (1).

612817 is an equidigital number, since it uses as much as digits as its factorization.

612817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 612817 is about 782.8262897987. The cubic root of 612817 is about 84.9396110856.

The spelling of 612817 in words is "six hundred twelve thousand, eight hundred seventeen".