1344097661 has 2 divisors, whose sum is σ = 1344097662. Its totient is φ = 1344097660.

The previous prime is 1344097633. The next prime is 1344097691. The reversal of 1344097661 is 1667904431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061521561 + 282576100 = 32581^2 + 16810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344097661 - 2¹⁸ = 1343835517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344097691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672048830 + 672048831.

It is an arithmetic number, because the mean of its divisors is an integer number (672048831).

Almost surely, 2^1344097661 is an apocalyptic number.

It is an amenable number.

1344097661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344097661 is an equidigital number, since it uses as much as digits as its factorization.

1344097661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1344097661 is about 36661.9374965372. The cubic root of 1344097661 is about 1103.5963999937.

The spelling of 1344097661 in words is "one billion, three hundred forty-four million, ninety-seven thousand, six hundred sixty-one".