744302621 has 2 divisors, whose sum is σ = 744302622. Its totient is φ = 744302620.

The previous prime is 744302579. The next prime is 744302623. The reversal of 744302621 is 126203447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743925625 + 376996 = 27275^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 744302621 - 2⁶ = 744302557 is a prime.

It is a Sophie Germain prime.

Together with 744302623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744302623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372151310 + 372151311.

It is an arithmetic number, because the mean of its divisors is an integer number (372151311).

Almost surely, 2^744302621 is an apocalyptic number.

It is an amenable number.

744302621 is a deficient number, since it is larger than the sum of its proper divisors (1).

744302621 is an equidigital number, since it uses as much as digits as its factorization.

744302621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 744302621 is about 27281.9101420703. The cubic root of 744302621 is about 906.2538184159.

The spelling of 744302621 in words is "seven hundred forty-four million, three hundred two thousand, six hundred twenty-one".