622547 has 2 divisors, whose sum is σ = 622548. Its totient is φ = 622546.

The previous prime is 622529. The next prime is 622549. The reversal of 622547 is 745226.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622547 - 2⁶ = 622483 is a prime.

Together with 622549, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622547.

It is not a weakly prime, because it can be changed into another prime (622549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311273 + 311274.

It is an arithmetic number, because the mean of its divisors is an integer number (311274).

2⁶²²⁵⁴⁷ is an apocalyptic number.

622547 is a deficient number, since it is larger than the sum of its proper divisors (1).

622547 is an equidigital number, since it uses as much as digits as its factorization.

622547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 26.

The square root of 622547 is about 789.0164763806. The cubic root of 622547 is about 85.3867954509.

Subtracting from 622547 its sum of digits (26), we obtain a square (622521 = 789²).

The spelling of 622547 in words is "six hundred twenty-two thousand, five hundred forty-seven".