1344752657 has 2 divisors, whose sum is σ = 1344752658. Its totient is φ = 1344752656.

The previous prime is 1344752573. The next prime is 1344752659. The reversal of 1344752657 is 7562574431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1215498496 + 129254161 = 34864^2 + 11369^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344752657 - 2²² = 1340558353 is a prime.

Together with 1344752659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1344752659) 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, 672376328 + 672376329.

It is an arithmetic number, because the mean of its divisors is an integer number (672376329).

Almost surely, 2^1344752657 is an apocalyptic number.

It is an amenable number.

1344752657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344752657 is an equidigital number, since it uses as much as digits as its factorization.

1344752657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 44.

The square root of 1344752657 is about 36670.8693243015. The cubic root of 1344752657 is about 1103.7756364342.

The spelling of 1344752657 in words is "one billion, three hundred forty-four million, seven hundred fifty-two thousand, six hundred fifty-seven".