1366225560 has 96 divisors (see below), whose sum is σ = 5074561440. Its totient is φ = 312279552.

The previous prime is 1366225547. The next prime is 1366225591. The reversal of 1366225560 is 655226631.

It is a happy number.

1366225560 is a `hidden beast` number, since 1 + 36 + 62 + 2 + 5 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268557 + ... + 273596.

It is an arithmetic number, because the mean of its divisors is an integer number (52860015).

Almost surely, 2^1366225560 is an apocalyptic number.

1366225560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366225560 is an abundant number, since it is smaller than the sum of its proper divisors (3708335880).

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

1366225560 is a wasteful number, since it uses less digits than its factorization.

1366225560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542177 (or 542170 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1366225560 is about 36962.4885525853. The cubic root of 1366225560 is about 1109.6196408012.

The spelling of 1366225560 in words is "one billion, three hundred sixty-six million, two hundred twenty-five thousand, five hundred sixty".