1366599966 has 16 divisors (see below), whose sum is σ = 2877052800. Its totient is φ = 431557848.

The previous prime is 1366599959. The next prime is 1366600003. The reversal of 1366599966 is 6699956631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5993746 + ... + 5993973.

It is an arithmetic number, because the mean of its divisors is an integer number (179815800).

Almost surely, 2^1366599966 is an apocalyptic number.

1366599966 is an abundant number, since it is smaller than the sum of its proper divisors (1510452834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366599966 is a wasteful number, since it uses less digits than its factorization.

1366599966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11987743.

The product of its digits is 14171760, while the sum is 60.

The square root of 1366599966 is about 36967.5528808711. The cubic root of 1366599966 is about 1109.7209931008.

The spelling of 1366599966 in words is "one billion, three hundred sixty-six million, five hundred ninety-nine thousand, nine hundred sixty-six".