5643405 has 32 divisors (see below), whose sum is σ = 10627200. Its totient is φ = 2831616.

The previous prime is 5643389. The next prime is 5643413. The reversal of 5643405 is 5043465.

It is not a de Polignac number, because 5643405 - 2⁴ = 5643389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1066 + ... + 3524.

It is an arithmetic number, because the mean of its divisors is an integer number (332100).

Almost surely, 2^5643405 is an apocalyptic number.

It is an amenable number.

5643405 is a deficient number, since it is larger than the sum of its proper divisors (4983795).

5643405 is a wasteful number, since it uses less digits than its factorization.

5643405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 5643405 is about 2375.5851910635. The cubic root of 5643405 is about 178.0384233006.

It can be divided in two parts, 564 and 3405, that added together give a square (3969 = 63²).

The spelling of 5643405 in words is "five million, six hundred forty-three thousand, four hundred five".