1366244660 has 24 divisors (see below), whose sum is σ = 3129942816. Its totient is φ = 496816160.

The previous prime is 1366244611. The next prime is 1366244683. The reversal of 1366244660 is 664426631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3104882 + ... + 3105321.

It is an arithmetic number, because the mean of its divisors is an integer number (130414284).

Almost surely, 2^1366244660 is an apocalyptic number.

1366244660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366244660 is an abundant number, since it is smaller than the sum of its proper divisors (1763698156).

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

1366244660 is a wasteful number, since it uses less digits than its factorization.

1366244660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210223 (or 6210221 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 1366244660 is about 36962.7469217319. The cubic root of 1366244660 is about 1109.6248116498.

The spelling of 1366244660 in words is "one billion, three hundred sixty-six million, two hundred forty-four thousand, six hundred sixty".