621732301 has 2 divisors, whose sum is σ = 621732302. Its totient is φ = 621732300.

The previous prime is 621732299. The next prime is 621732341. The reversal of 621732301 is 103237126.

621732301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616777225 + 4955076 = 24835^2 + 2226^2 .

It is a cyclic number.

It is not a de Polignac number, because 621732301 - 2¹ = 621732299 is a prime.

Together with 621732299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621732341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310866150 + 310866151.

It is an arithmetic number, because the mean of its divisors is an integer number (310866151).

Almost surely, 2^621732301 is an apocalyptic number.

It is an amenable number.

621732301 is a deficient number, since it is larger than the sum of its proper divisors (1).

621732301 is an equidigital number, since it uses as much as digits as its factorization.

621732301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 621732301 is about 24934.5603731046. The cubic root of 621732301 is about 853.4953191667.

Adding to 621732301 its reverse (103237126), we get a palindrome (724969427).

The spelling of 621732301 in words is "six hundred twenty-one million, seven hundred thirty-two thousand, three hundred one".