621361333 has 2 divisors, whose sum is σ = 621361334. Its totient is φ = 621361332.

The previous prime is 621361319. The next prime is 621361357. The reversal of 621361333 is 333163126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354267684 + 267093649 = 18822^2 + 16343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621361333 is a prime.

It is a super-2 number, since 2×621361333² = 772179812295073778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621061333) 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, 310680666 + 310680667.

It is an arithmetic number, because the mean of its divisors is an integer number (310680667).

Almost surely, 2^621361333 is an apocalyptic number.

It is an amenable number.

621361333 is a deficient number, since it is larger than the sum of its proper divisors (1).

621361333 is an equidigital number, since it uses as much as digits as its factorization.

621361333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 28.

The square root of 621361333 is about 24927.1204313695. The cubic root of 621361333 is about 853.3255341728.

The spelling of 621361333 in words is "six hundred twenty-one million, three hundred sixty-one thousand, three hundred thirty-three".