1366940 has 24 divisors (see below), whose sum is σ = 2942352. Its totient is φ = 533120.

The previous prime is 1366933. The next prime is 1366943. The reversal of 1366940 is 496631.

1366940 = 165² + 166² + ... + 204².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (122598).

2^1366940 is an apocalyptic number.

1366940 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 1366940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471176).

1366940 is an abundant number, since it is smaller than the sum of its proper divisors (1575412).

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

1366940 is a wasteful number, since it uses less digits than its factorization.

1366940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1366940 is about 1169.1620931248. The cubic root of 1366940 is about 110.9813024806.

The spelling of 1366940 in words is "one million, three hundred sixty-six thousand, nine hundred forty".