1368561 has 12 divisors (see below), whose sum is σ = 1885488. Its totient is φ = 882504.

The previous prime is 1368547. The next prime is 1368599. The reversal of 1368561 is 1658631.

It is not a de Polignac number, because 1368561 - 2⁵ = 1368529 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1368161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13236 + ... + 13338.

It is an arithmetic number, because the mean of its divisors is an integer number (157124).

2^1368561 is an apocalyptic number.

It is an amenable number.

1368561 is a deficient number, since it is larger than the sum of its proper divisors (516927).

1368561 is an equidigital number, since it uses as much as digits as its factorization.

1368561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 149 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1368561 is about 1169.8551192349. The cubic root of 1368561 is about 111.0251545945.

The spelling of 1368561 in words is "one million, three hundred sixty-eight thousand, five hundred sixty-one".