1366722560 has 192 divisors, whose sum is σ = 3915475200. Its totient is φ = 447676416.

The previous prime is 1366722547. The next prime is 1366722569. The reversal of 1366722560 is 652276631.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1366722569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1648226 + ... + 1649054.

It is an arithmetic number, because the mean of its divisors is an integer number (20393100).

Almost surely, 2^1366722560 is an apocalyptic number.

1366722560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366722560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957737600).

1366722560 is an abundant number, since it is smaller than the sum of its proper divisors (2548752640).

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

1366722560 is an equidigital number, since it uses as much as digits as its factorization.

1366722560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 1366722560 is about 36969.2109734574. The cubic root of 1366722560 is about 1109.7541754684.

The spelling of 1366722560 in words is "one billion, three hundred sixty-six million, seven hundred twenty-two thousand, five hundred sixty".