1366563680 has 24 divisors (see below), whose sum is σ = 3228507072. Its totient is φ = 546625408.

The previous prime is 1366563677. The next prime is 1366563697. The reversal of 1366563680 is 863656631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4270352 + ... + 4270671.

It is an arithmetic number, because the mean of its divisors is an integer number (134521128).

Almost surely, 2^1366563680 is an apocalyptic number.

1366563680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366563680 is an abundant number, since it is smaller than the sum of its proper divisors (1861943392).

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

1366563680 is an equidigital number, since it uses as much as digits as its factorization.

1366563680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541038 (or 8541030 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 1366563680 is about 36967.0620958712. The cubic root of 1366563680 is about 1109.7111712330.

The spelling of 1366563680 in words is "one billion, three hundred sixty-six million, five hundred sixty-three thousand, six hundred eighty".