1364643 has 12 divisors (see below), whose sum is σ = 2252848. Its totient is φ = 779760.

The previous prime is 1364633. The next prime is 1364663. The reversal of 1364643 is 3464631.

1364643 is a `hidden beast` number, since 13 + 6 + 4 + 643 = 666.

It is not a de Polignac number, because 1364643 - 2¹³ = 1356451 is a prime.

It is a d-powerful number, because it can be written as 1 + 3³ + 6² + 4⁷ + 6⁷ + 4¹⁰ + 3⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1364633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10768 + ... + 10893.

2^1364643 is an apocalyptic number.

1364643 is a deficient number, since it is larger than the sum of its proper divisors (888205).

1364643 is a wasteful number, since it uses less digits than its factorization.

1364643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21674 (or 21671 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 1364643 is about 1168.1793526681. The cubic root of 1364643 is about 110.9191034628.

It can be divided in two parts, 13646 and 43, that added together give a square (13689 = 117²).

The spelling of 1364643 in words is "one million, three hundred sixty-four thousand, six hundred forty-three".