621496543 has 2 divisors, whose sum is σ = 621496544. Its totient is φ = 621496542.

The previous prime is 621496529. The next prime is 621496549. The reversal of 621496543 is 345694126.

621496543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621496543 - 2¹⁷ = 621365471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621496496 and 621496505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621496549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310748271 + 310748272.

It is an arithmetic number, because the mean of its divisors is an integer number (310748272).

Almost surely, 2^621496543 is an apocalyptic number.

621496543 is a deficient number, since it is larger than the sum of its proper divisors (1).

621496543 is an equidigital number, since it uses as much as digits as its factorization.

621496543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 621496543 is about 24929.8323901305. The cubic root of 621496543 is about 853.3874250413.

The spelling of 621496543 in words is "six hundred twenty-one million, four hundred ninety-six thousand, five hundred forty-three".