780853 has 2 divisors, whose sum is σ = 780854. Its totient is φ = 780852.

The previous prime is 780851. The next prime is 780869. The reversal of 780853 is 358087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508369 + 272484 = 713^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 780853 - 2¹ = 780851 is a prime.

Together with 780851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390426 + 390427.

It is an arithmetic number, because the mean of its divisors is an integer number (390427).

2⁷⁸⁰⁸⁵³ is an apocalyptic number.

It is an amenable number.

780853 is a deficient number, since it is larger than the sum of its proper divisors (1).

780853 is an equidigital number, since it uses as much as digits as its factorization.

780853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 780853 is about 883.6588708320. The cubic root of 780853 is about 92.0851841773.

The spelling of 780853 in words is "seven hundred eighty thousand, eight hundred fifty-three".