1305966677 has 2 divisors, whose sum is σ = 1305966678. Its totient is φ = 1305966676.

The previous prime is 1305966671. The next prime is 1305966743. The reversal of 1305966677 is 7766695031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120843441 + 185123236 = 33479^2 + 13606^2 .

It is an emirp because it is prime and its reverse (7766695031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1305966677 - 2⁴ = 1305966661 is a prime.

It is a super-2 number, since 2×1305966677² = 3411097922868844658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305966671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652983338 + 652983339.

It is an arithmetic number, because the mean of its divisors is an integer number (652983339).

Almost surely, 2^1305966677 is an apocalyptic number.

It is an amenable number.

1305966677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305966677 is an equidigital number, since it uses as much as digits as its factorization.

1305966677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The square root of 1305966677 is about 36138.1609521016. The cubic root of 1305966677 is about 1093.0600757114.

The spelling of 1305966677 in words is "one billion, three hundred five million, nine hundred sixty-six thousand, six hundred seventy-seven".