621876443 has 2 divisors, whose sum is σ = 621876444. Its totient is φ = 621876442.

The previous prime is 621876419. The next prime is 621876487. The reversal of 621876443 is 344678126.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 621876443 - 2⁸ = 621876187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 621876443.

It is not a weakly prime, because it can be changed into another prime (621876943) 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, 310938221 + 310938222.

It is an arithmetic number, because the mean of its divisors is an integer number (310938222).

Almost surely, 2^621876443 is an apocalyptic number.

621876443 is a deficient number, since it is larger than the sum of its proper divisors (1).

621876443 is an equidigital number, since it uses as much as digits as its factorization.

621876443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The square root of 621876443 is about 24937.4506114799. The cubic root of 621876443 is about 853.5612719977.

The spelling of 621876443 in words is "six hundred twenty-one million, eight hundred seventy-six thousand, four hundred forty-three".