1366500 has 48 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 364000.

The previous prime is 1366493. The next prime is 1366507. The reversal of 1366500 is 56631.

It is an interprime number because it is at equal distance from previous prime (1366493) and next prime (1366507).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1366507) 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 15 ways as a sum of consecutive naturals, for example, 1045 + ... + 1955.

It is an arithmetic number, because the mean of its divisors is an integer number (82992).

2^1366500 is an apocalyptic number.

1366500 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 1366500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991808).

1366500 is an abundant number, since it is smaller than the sum of its proper divisors (2617116).

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

1366500 is a wasteful number, since it uses less digits than its factorization.

1366500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1366500 is about 1168.9739090330. The cubic root of 1366500 is about 110.9693933957.

The spelling of 1366500 in words is "one million, three hundred sixty-six thousand, five hundred".