845653 has 2 divisors, whose sum is σ = 845654. Its totient is φ = 845652.

The previous prime is 845623. The next prime is 845657. The reversal of 845653 is 356548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 208849 = 798^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 845653 - 2¹³ = 837461 is a prime.

845653 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422826 + 422827.

It is an arithmetic number, because the mean of its divisors is an integer number (422827).

2⁸⁴⁵⁶⁵³ is an apocalyptic number.

It is an amenable number.

845653 is a deficient number, since it is larger than the sum of its proper divisors (1).

845653 is an equidigital number, since it uses as much as digits as its factorization.

845653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 845653 is about 919.5939321244. The cubic root of 845653 is about 94.5650662819.

The spelling of 845653 in words is "eight hundred forty-five thousand, six hundred fifty-three".