621061933 has 2 divisors, whose sum is σ = 621061934. Its totient is φ = 621061932.

The previous prime is 621061871. The next prime is 621061937. The reversal of 621061933 is 339160126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480354889 + 140707044 = 21917^2 + 11862^2 .

It is a cyclic number.

It is not a de Polignac number, because 621061933 - 2⁹ = 621061421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621061895 and 621061904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621061937) 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, 310530966 + 310530967.

It is an arithmetic number, because the mean of its divisors is an integer number (310530967).

Almost surely, 2^621061933 is an apocalyptic number.

It is an amenable number.

621061933 is a deficient number, since it is larger than the sum of its proper divisors (1).

621061933 is an equidigital number, since it uses as much as digits as its factorization.

621061933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 621061933 is about 24921.1142006131. The cubic root of 621061933 is about 853.1884552049.

The spelling of 621061933 in words is "six hundred twenty-one million, sixty-one thousand, nine hundred thirty-three".