621367273 has 2 divisors, whose sum is σ = 621367274. Its totient is φ = 621367272.

The previous prime is 621367171. The next prime is 621367301. The reversal of 621367273 is 372763126.

621367273 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., 546250384 + 75116889 = 23372^2 + 8667^2 .

It is a cyclic number.

It is not a de Polignac number, because 621367273 - 2¹⁷ = 621236201 is a prime.

It is a super-3 number, since 3×621367273³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (621365273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310683636 + 310683637.

It is an arithmetic number, because the mean of its divisors is an integer number (310683637).

Almost surely, 2^621367273 is an apocalyptic number.

It is an amenable number.

621367273 is a deficient number, since it is larger than the sum of its proper divisors (1).

621367273 is an equidigital number, since it uses as much as digits as its factorization.

621367273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 37.

The square root of 621367273 is about 24927.2395784210. The cubic root of 621367273 is about 853.3282533301.

The spelling of 621367273 in words is "six hundred twenty-one million, three hundred sixty-seven thousand, two hundred seventy-three".