621334697 has 2 divisors, whose sum is σ = 621334698. Its totient is φ = 621334696.

The previous prime is 621334691. The next prime is 621334733. The reversal of 621334697 is 796433126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588111001 + 33223696 = 24251^2 + 5764^2 .

It is a cyclic number.

It is not a de Polignac number, because 621334697 - 2¹² = 621330601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (621334691) 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 as a sum of consecutive naturals, namely, 310667348 + 310667349.

It is an arithmetic number, because the mean of its divisors is an integer number (310667349).

Almost surely, 2^621334697 is an apocalyptic number.

It is an amenable number.

621334697 is a deficient number, since it is larger than the sum of its proper divisors (1).

621334697 is an equidigital number, since it uses as much as digits as its factorization.

621334697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 621334697 is about 24926.5861481271. The cubic root of 621334697 is about 853.3133407826.

The spelling of 621334697 in words is "six hundred twenty-one million, three hundred thirty-four thousand, six hundred ninety-seven".