1366988 has 12 divisors (see below), whose sum is σ = 2734032. Its totient is φ = 585840.

The previous prime is 1366979. The next prime is 1366991. The reversal of 1366988 is 8896631.

It is a happy number.

1366988 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24383 + ... + 24438.

It is an arithmetic number, because the mean of its divisors is an integer number (227836).

2^1366988 is an apocalyptic number.

It is an amenable number.

1366988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1366988 is a wasteful number, since it uses less digits than its factorization.

1366988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48832 (or 48830 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 1366988 is about 1169.1826204661. The cubic root of 1366988 is about 110.9826014989.

The spelling of 1366988 in words is "one million, three hundred sixty-six thousand, nine hundred eighty-eight".