1366966 has 4 divisors (see below), whose sum is σ = 2050452. Its totient is φ = 683482.

The previous prime is 1366957. The next prime is 1366979. The reversal of 1366966 is 6696631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6696631 = 1523 ⋅4397.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341740 + ... + 341743.

It is an arithmetic number, because the mean of its divisors is an integer number (512613).

2^1366966 is an apocalyptic number.

1366966 is a deficient number, since it is larger than the sum of its proper divisors (683486).

1366966 is an equidigital number, since it uses as much as digits as its factorization.

1366966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683485.

The product of its digits is 34992, while the sum is 37.

The square root of 1366966 is about 1169.1732121461. The cubic root of 1366966 is about 110.9820061193.

It can be divided in two parts, 1366 and 966, that added together give a palindrome (2332).

The spelling of 1366966 in words is "one million, three hundred sixty-six thousand, nine hundred sixty-six".