5645040 has 80 divisors (see below), whose sum is σ = 17939328. Its totient is φ = 1467648.

The previous prime is 5645011. The next prime is 5645047. The reversal of 5645040 is 405465.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5645040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645047) 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, 10047 + ... + 10593.

Almost surely, 2^5645040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5645040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8969664).

5645040 is an abundant number, since it is smaller than the sum of its proper divisors (12294288).

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

5645040 is a wasteful number, since it uses less digits than its factorization.

5645040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 5645040 is about 2375.9292918772. The cubic root of 5645040 is about 178.0556153277.

The spelling of 5645040 in words is "five million, six hundred forty-five thousand, forty".