1366605544 has 16 divisors (see below), whose sum is σ = 2563075620. Its totient is φ = 683118720.

The previous prime is 1366605523. The next prime is 1366605547. The reversal of 1366605544 is 4455066631.

It can be written as a sum of positive squares in 2 ways, for example, as 989857444 + 376748100 = 31462^2 + 19410^2 .

It is a super-2 number, since 2×1366605544² = 3735221425783071872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1366605497 and 1366605506.

It is not an unprimeable number, because it can be changed into a prime (1366605547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11614 + ... + 53554.

Almost surely, 2^1366605544 is an apocalyptic number.

It is an amenable number.

1366605544 is a deficient number, since it is larger than the sum of its proper divisors (1196470076).

1366605544 is a wasteful number, since it uses less digits than its factorization.

1366605544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46020 (or 46016 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 1366605544 is about 36967.6283253335. The cubic root of 1366605544 is about 1109.7225029343.

The spelling of 1366605544 in words is "one billion, three hundred sixty-six million, six hundred five thousand, five hundred forty-four".