612869 has 2 divisors, whose sum is σ = 612870. Its totient is φ = 612868.

The previous prime is 612853. The next prime is 612877. The reversal of 612869 is 968216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315844 + 297025 = 562^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 612869 - 2⁴ = 612853 is a prime.

It is a super-2 number, since 2×612869² = 751216822322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306434 + 306435.

It is an arithmetic number, because the mean of its divisors is an integer number (306435).

2⁶¹²⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

612869 is a deficient number, since it is larger than the sum of its proper divisors (1).

612869 is an equidigital number, since it uses as much as digits as its factorization.

612869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 612869 is about 782.8595020820. The cubic root of 612869 is about 84.9420135075.

The spelling of 612869 in words is "six hundred twelve thousand, eight hundred sixty-nine".