744765457 has 2 divisors, whose sum is σ = 744765458. Its totient is φ = 744765456.

The previous prime is 744765449. The next prime is 744765503. The reversal of 744765457 is 754567447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 735711376 + 9054081 = 27124^2 + 3009^2 .

It is an emirp because it is prime and its reverse (754567447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 744765457 - 2³ = 744765449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 744765457.

It is not a weakly prime, because it can be changed into another prime (744765407) 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, 372382728 + 372382729.

It is an arithmetic number, because the mean of its divisors is an integer number (372382729).

Almost surely, 2^744765457 is an apocalyptic number.

It is an amenable number.

744765457 is a deficient number, since it is larger than the sum of its proper divisors (1).

744765457 is an equidigital number, since it uses as much as digits as its factorization.

744765457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3292800, while the sum is 49.

The square root of 744765457 is about 27290.3912943732. The cubic root of 744765457 is about 906.4416273204.

The spelling of 744765457 in words is "seven hundred forty-four million, seven hundred sixty-five thousand, four hundred fifty-seven".