634853 has 2 divisors, whose sum is σ = 634854. Its totient is φ = 634852.

The previous prime is 634841. The next prime is 634859. The reversal of 634853 is 358436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521284 + 113569 = 722^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 634853 - 2⁸ = 634597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634859) 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, 317426 + 317427.

It is an arithmetic number, because the mean of its divisors is an integer number (317427).

2⁶³⁴⁸⁵³ is an apocalyptic number.

It is an amenable number.

634853 is a deficient number, since it is larger than the sum of its proper divisors (1).

634853 is an equidigital number, since it uses as much as digits as its factorization.

634853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 634853 is about 796.7766311834. The cubic root of 634853 is about 85.9457472856.

The spelling of 634853 in words is "six hundred thirty-four thousand, eight hundred fifty-three".