653879 has 2 divisors, whose sum is σ = 653880. Its totient is φ = 653878.

The previous prime is 653831. The next prime is 653881. The reversal of 653879 is 978356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653879 - 2⁸ = 653623 is a prime.

Together with 653881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326939 + 326940.

It is an arithmetic number, because the mean of its divisors is an integer number (326940).

2⁶⁵³⁸⁷⁹ is an apocalyptic number.

653879 is a deficient number, since it is larger than the sum of its proper divisors (1).

653879 is an equidigital number, since it uses as much as digits as its factorization.

653879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 653879 is about 808.6278501264. The cubic root of 653879 is about 86.7958838400.

The spelling of 653879 in words is "six hundred fifty-three thousand, eight hundred seventy-nine".