621574097 has 2 divisors, whose sum is σ = 621574098. Its totient is φ = 621574096.

The previous prime is 621574067. The next prime is 621574117. The reversal of 621574097 is 790475126.

621574097 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 can be written as a sum of positive squares in only one way, i.e., 375429376 + 246144721 = 19376^2 + 15689^2 .

It is a cyclic number.

It is not a de Polignac number, because 621574097 - 2¹⁸ = 621311953 is a prime.

It is a super-2 number, since 2×621574097² = 772708716122730818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (621574007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310787048 + 310787049.

It is an arithmetic number, because the mean of its divisors is an integer number (310787049).

Almost surely, 2^621574097 is an apocalyptic number.

It is an amenable number.

621574097 is a deficient number, since it is larger than the sum of its proper divisors (1).

621574097 is an equidigital number, since it uses as much as digits as its factorization.

621574097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 621574097 is about 24931.3877872853. The cubic root of 621574097 is about 853.4229204684.

The spelling of 621574097 in words is "six hundred twenty-one million, five hundred seventy-four thousand, ninety-seven".