1368065669 has 2 divisors, whose sum is σ = 1368065670. Its totient is φ = 1368065668.

The previous prime is 1368065663. The next prime is 1368065687. The reversal of 1368065669 is 9665608631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1278062500 + 90003169 = 35750^2 + 9487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368065669 - 2²⁴ = 1351288453 is a prime.

It is a super-2 number, since 2×1368065669² = 3743207349392835122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368065663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684032834 + 684032835.

It is an arithmetic number, because the mean of its divisors is an integer number (684032835).

Almost surely, 2^1368065669 is an apocalyptic number.

It is an amenable number.

1368065669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368065669 is an equidigital number, since it uses as much as digits as its factorization.

1368065669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 1368065669 is about 36987.3717503691. The cubic root of 1368065669 is about 1110.1175832477.

The spelling of 1368065669 in words is "one billion, three hundred sixty-eight million, sixty-five thousand, six hundred sixty-nine".