1366860 has 96 divisors (see below), whose sum is σ = 4435200. Its totient is φ = 311040.

The previous prime is 1366843. The next prime is 1366861. The reversal of 1366860 is 686631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1366861) 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 31 ways as a sum of consecutive naturals, for example, 12486 + ... + 12594.

It is an arithmetic number, because the mean of its divisors is an integer number (46200).

2^1366860 is an apocalyptic number.

1366860 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 1366860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2217600).

1366860 is an abundant number, since it is smaller than the sum of its proper divisors (3068340).

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

1366860 is a wasteful number, since it uses less digits than its factorization.

1366860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1366860 is about 1169.1278800884. The cubic root of 1366860 is about 110.9791373826.

It can be divided in two parts, 136 and 6860, that added together give a palindrome (6996).

The spelling of 1366860 in words is "one million, three hundred sixty-six thousand, eight hundred sixty".