1136643 has 8 divisors (see below), whose sum is σ = 1552656. Its totient is φ = 739200.

The previous prime is 1136633. The next prime is 1136647. The reversal of 1136643 is 3466311.

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

It is not a de Polignac number, because 1136643 - 2⁴ = 1136627 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1136647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4498 + ... + 4743.

It is an arithmetic number, because the mean of its divisors is an integer number (194082).

2^1136643 is an apocalyptic number.

1136643 is a deficient number, since it is larger than the sum of its proper divisors (416013).

1136643 is an equidigital number, since it uses as much as digits as its factorization.

1136643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9285.

The product of its digits is 1296, while the sum is 24.

The square root of 1136643 is about 1066.1346068860. The cubic root of 1136643 is about 104.3617518175.

The spelling of 1136643 in words is "one million, one hundred thirty-six thousand, six hundred forty-three".