1366530 has 64 divisors (see below), whose sum is σ = 3701376. Its totient is φ = 320000.

The previous prime is 1366529. The next prime is 1366531. The reversal of 1366530 is 356631.

It is an interprime number because it is at equal distance from previous prime (1366529) and next prime (1366531).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366530.

It is not an unprimeable number, because it can be changed into a prime (1366531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13480 + ... + 13580.

It is an arithmetic number, because the mean of its divisors is an integer number (57834).

2^1366530 is an apocalyptic number.

1366530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1850688).

1366530 is an abundant number, since it is smaller than the sum of its proper divisors (2334846).

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

1366530 is a wasteful number, since it uses less digits than its factorization.

1366530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1366530 is about 1168.9867407289. The cubic root of 1366530 is about 110.9702054600.

It can be divided in two parts, 13665 and 30, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 1366530 in words is "one million, three hundred sixty-six thousand, five hundred thirty".