653673871 has 2 divisors, whose sum is σ = 653673872. Its totient is φ = 653673870.

The previous prime is 653673841. The next prime is 653673883. The reversal of 653673871 is 178376356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653673871 - 2²⁵ = 620119439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653673841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326836935 + 326836936.

It is an arithmetic number, because the mean of its divisors is an integer number (326836936).

Almost surely, 2^653673871 is an apocalyptic number.

653673871 is a deficient number, since it is larger than the sum of its proper divisors (1).

653673871 is an equidigital number, since it uses as much as digits as its factorization.

653673871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 653673871 is about 25567.0465834441. The cubic root of 653673871 is about 867.8680661777.

The spelling of 653673871 in words is "six hundred fifty-three million, six hundred seventy-three thousand, eight hundred seventy-one".