7274224621 has 2 divisors, whose sum is σ = 7274224622. Its totient is φ = 7274224620.

The previous prime is 7274224609. The next prime is 7274224627. The reversal of 7274224621 is 1264224727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6433804521 + 840420100 = 80211^2 + 28990^2 .

It is a cyclic number.

It is not a de Polignac number, because 7274224621 - 2²⁵ = 7240670189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7274224627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3637112310 + 3637112311.

It is an arithmetic number, because the mean of its divisors is an integer number (3637112311).

Almost surely, 2^7274224621 is an apocalyptic number.

It is an amenable number.

7274224621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7274224621 is an equidigital number, since it uses as much as digits as its factorization.

7274224621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 37.

The square root of 7274224621 is about 85289.0650728451. The cubic root of 7274224621 is about 1937.5915679845.

The spelling of 7274224621 in words is "seven billion, two hundred seventy-four million, two hundred twenty-four thousand, six hundred twenty-one".