1366540 has 48 divisors (see below), whose sum is σ = 3370752. Its totient is φ = 455616.

The previous prime is 1366531. The next prime is 1366543. The reversal of 1366540 is 456631.

It is not an unprimeable number, because it can be changed into a prime (1366543) 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, 5907 + ... + 6133.

It is an arithmetic number, because the mean of its divisors is an integer number (70224).

2^1366540 is an apocalyptic number.

1366540 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 1366540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685376).

1366540 is an abundant number, since it is smaller than the sum of its proper divisors (2004212).

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

1366540 is a wasteful number, since it uses less digits than its factorization.

1366540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1366540 is about 1168.9910179296. The cubic root of 1366540 is about 110.9704761454.

Subtracting from 1366540 its reverse (456631), we obtain a palindrome (909909).

The spelling of 1366540 in words is "one million, three hundred sixty-six thousand, five hundred forty".