1343405663 has 2 divisors, whose sum is σ = 1343405664. Its totient is φ = 1343405662.

The previous prime is 1343405647. The next prime is 1343405683. The reversal of 1343405663 is 3665043431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1343405663 - 2⁴ = 1343405647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343405683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671702831 + 671702832.

It is an arithmetic number, because the mean of its divisors is an integer number (671702832).

Almost surely, 2^1343405663 is an apocalyptic number.

1343405663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343405663 is an equidigital number, since it uses as much as digits as its factorization.

1343405663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 1343405663 is about 36652.4987279176. The cubic root of 1343405663 is about 1103.4069748697.

The spelling of 1343405663 in words is "one billion, three hundred forty-three million, four hundred five thousand, six hundred sixty-three".