621376043 has 2 divisors, whose sum is σ = 621376044. Its totient is φ = 621376042.

The previous prime is 621375991. The next prime is 621376087. The reversal of 621376043 is 340673126.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621376043 - 2¹⁴ = 621359659 is a prime.

It is a super-2 number, since 2×621376043² = 772216373628675698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (621366043) 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, 310688021 + 310688022.

It is an arithmetic number, because the mean of its divisors is an integer number (310688022).

Almost surely, 2^621376043 is an apocalyptic number.

621376043 is a deficient number, since it is larger than the sum of its proper divisors (1).

621376043 is an equidigital number, since it uses as much as digits as its factorization.

621376043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 621376043 is about 24927.4154897775. The cubic root of 621376043 is about 853.3322679464.

The spelling of 621376043 in words is "six hundred twenty-one million, three hundred seventy-six thousand, forty-three".