1366980 has 24 divisors (see below), whose sum is σ = 3827712. Its totient is φ = 364512.

The previous prime is 1366979. The next prime is 1366991. The reversal of 1366980 is 896631.

It is an unprimeable number.

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, 11332 + ... + 11451.

It is an arithmetic number, because the mean of its divisors is an integer number (159488).

2^1366980 is an apocalyptic number.

1366980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366980 is an abundant number, since it is smaller than the sum of its proper divisors (2460732).

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

1366980 is a wasteful number, since it uses less digits than its factorization.

1366980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22795 (or 22793 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1366980 is about 1169.1791992676. The cubic root of 1366980 is about 110.9823849980.

It can be divided in two parts, 1366 and 980, that added together give a triangular number (2346 = T₆₈).

The spelling of 1366980 in words is "one million, three hundred sixty-six thousand, nine hundred eighty".