1366436687 has 24 divisors (see below), whose sum is σ = 1770958080. Its totient is φ = 1042082160.

The previous prime is 1366436683. The next prime is 1366436707. The reversal of 1366436687 is 7866346631.

It is not a de Polignac number, because 1366436687 - 2² = 1366436683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366436683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1637 + ... + 52302.

It is an arithmetic number, because the mean of its divisors is an integer number (73789920).

Almost surely, 2^1366436687 is an apocalyptic number.

1366436687 is a deficient number, since it is larger than the sum of its proper divisors (404521393).

1366436687 is a wasteful number, since it uses less digits than its factorization.

1366436687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54011 (or 54004 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 50.

The square root of 1366436687 is about 36965.3444052669. The cubic root of 1366436687 is about 1109.6767954923.

The spelling of 1366436687 in words is "one billion, three hundred sixty-six million, four hundred thirty-six thousand, six hundred eighty-seven".