5611640 has 32 divisors (see below), whose sum is σ = 12869280. Its totient is φ = 2201472.

The previous prime is 5611637. The next prime is 5611643. The reversal of 5611640 is 461165.

It is an interprime number because it is at equal distance from previous prime (5611637) and next prime (5611643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797 + ... + 3443.

It is an arithmetic number, because the mean of its divisors is an integer number (402165).

Almost surely, 2^5611640 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 5611640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6434640).

5611640 is an abundant number, since it is smaller than the sum of its proper divisors (7257640).

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

5611640 is a wasteful number, since it uses less digits than its factorization.

5611640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 5611640 is about 2368.8900354385. The cubic root of 5611640 is about 177.7037533249.

The spelling of 5611640 in words is "five million, six hundred eleven thousand, six hundred forty".