1336645 has 16 divisors (see below), whose sum is σ = 1710720. Its totient is φ = 1000384.

The previous prime is 1336637. The next prime is 1336649. The reversal of 1336645 is 5466331.

It is a cyclic number.

It is not a de Polignac number, because 1336645 - 2³ = 1336637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1336649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6687 + ... + 6883.

It is an arithmetic number, because the mean of its divisors is an integer number (106920).

2^1336645 is an apocalyptic number.

It is an amenable number.

1336645 is a deficient number, since it is larger than the sum of its proper divisors (374075).

1336645 is a wasteful number, since it uses less digits than its factorization.

1336645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its digits is 6480, while the sum is 28.

The square root of 1336645 is about 1156.1336427939. The cubic root of 1336645 is about 110.1552903107.

It can be divided in two parts, 133 and 6645, that multiplied together give a triangular number (883785 = T₁₃₂₉).

The spelling of 1336645 in words is "one million, three hundred thirty-six thousand, six hundred forty-five".