621272567 has 2 divisors, whose sum is σ = 621272568. Its totient is φ = 621272566.

The previous prime is 621272551. The next prime is 621272569. The reversal of 621272567 is 765272126.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621272567 - 2⁴ = 621272551 is a prime.

Together with 621272569, 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 621272567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621272569) 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, 310636283 + 310636284.

It is an arithmetic number, because the mean of its divisors is an integer number (310636284).

Almost surely, 2^621272567 is an apocalyptic number.

621272567 is a deficient number, since it is larger than the sum of its proper divisors (1).

621272567 is an equidigital number, since it uses as much as digits as its factorization.

621272567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 38.

The square root of 621272567 is about 24925.3398572617. The cubic root of 621272567 is about 853.2848976448.

The spelling of 621272567 in words is "six hundred twenty-one million, two hundred seventy-two thousand, five hundred sixty-seven".