621332241 has 16 divisors (see below), whose sum is σ = 848897280. Its totient is φ = 404021520.

The previous prime is 621332237. The next prime is 621332251. The reversal of 621332241 is 142233126.

It is not a de Polignac number, because 621332241 - 2² = 621332237 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (621332251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101650 + ... + 107588.

It is an arithmetic number, because the mean of its divisors is an integer number (53056080).

Almost surely, 2^621332241 is an apocalyptic number.

It is an amenable number.

621332241 is a deficient number, since it is larger than the sum of its proper divisors (227565039).

621332241 is a wasteful number, since it uses less digits than its factorization.

621332241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6796.

The product of its digits is 1728, while the sum is 24.

The square root of 621332241 is about 24926.5368834100. The cubic root of 621332241 is about 853.3122164608.

Adding to 621332241 its reverse (142233126), we get a palindrome (763565367).

The spelling of 621332241 in words is "six hundred twenty-one million, three hundred thirty-two thousand, two hundred forty-one".