653222387 has 2 divisors, whose sum is σ = 653222388. Its totient is φ = 653222386.

The previous prime is 653222363. The next prime is 653222389. The reversal of 653222387 is 783222356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653222387 - 2²⁰ = 652173811 is a prime.

Together with 653222389, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 653222387.

It is not a weakly prime, because it can be changed into another prime (653222389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326611193 + 326611194.

It is an arithmetic number, because the mean of its divisors is an integer number (326611194).

Almost surely, 2^653222387 is an apocalyptic number.

653222387 is a deficient number, since it is larger than the sum of its proper divisors (1).

653222387 is an equidigital number, since it uses as much as digits as its factorization.

653222387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 653222387 is about 25558.2156458545. The cubic root of 653222387 is about 867.6682117813.

The spelling of 653222387 in words is "six hundred fifty-three million, two hundred twenty-two thousand, three hundred eighty-seven".