1366633 has 8 divisors (see below), whose sum is σ = 1406888. Its totient is φ = 1327104.

The previous prime is 1366627. The next prime is 1366639. The reversal of 1366633 is 3366631.

It is an interprime number because it is at equal distance from previous prime (1366627) and next prime (1366639).

It can be written as a sum of positive squares in 4 ways, for example, as 94249 + 1272384 = 307^2 + 1128^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(1366633) divides (1366633-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 1366633 - 2⁵ = 1366601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366639) 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 7 ways as a sum of consecutive naturals, for example, 6985 + ... + 7177.

It is an arithmetic number, because the mean of its divisors is an integer number (175861).

2^1366633 is an apocalyptic number.

It is an amenable number.

1366633 is a deficient number, since it is larger than the sum of its proper divisors (40255).

1366633 is an equidigital number, since it uses as much as digits as its factorization.

1366633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 5832, while the sum is 28.

The square root of 1366633 is about 1169.0307951461. The cubic root of 1366633 is about 110.9729934568.

The spelling of 1366633 in words is "one million, three hundred sixty-six thousand, six hundred thirty-three".