5645646 has 16 divisors (see below), whose sum is σ = 12546000. Its totient is φ = 1881864.

The previous prime is 5645639. The next prime is 5645657. The reversal of 5645646 is 6465465.

It is a happy number.

5645646 is a `hidden beast` number, since 5 + 6 + 4 + 5 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5645646.

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 7 ways as a sum of consecutive naturals, for example, 52221 + ... + 52328.

It is an arithmetic number, because the mean of its divisors is an integer number (784125).

Almost surely, 2^5645646 is an apocalyptic number.

5645646 is an abundant number, since it is smaller than the sum of its proper divisors (6900354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5645646 is a wasteful number, since it uses less digits than its factorization.

5645646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104560 (or 104554 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 5645646 is about 2376.0568175025. The cubic root of 5645646 is about 178.0619865753.

The spelling of 5645646 in words is "five million, six hundred forty-five thousand, six hundred forty-six".