1366620 has 24 divisors (see below), whose sum is σ = 3826704. Its totient is φ = 364416.

The previous prime is 1366609. The next prime is 1366627. The reversal of 1366620 is 266631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366627) 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 7 ways as a sum of consecutive naturals, for example, 11329 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (159446).

2^1366620 is an apocalyptic number.

1366620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366620 is an abundant number, since it is smaller than the sum of its proper divisors (2460084).

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

1366620 is a wasteful number, since it uses less digits than its factorization.

1366620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22789 (or 22787 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1366620 is about 1169.0252349714. The cubic root of 1366620 is about 110.9726415815.

The spelling of 1366620 in words is "one million, three hundred sixty-six thousand, six hundred twenty".