5718640 has 20 divisors (see below), whose sum is σ = 13296024. Its totient is φ = 2287424.

The previous prime is 5718623. The next prime is 5718641. The reversal of 5718640 is 468175.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5718641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35662 + ... + 35821.

Almost surely, 2^5718640 is an apocalyptic number.

It is an amenable number.

5718640 is an abundant number, since it is smaller than the sum of its proper divisors (7577384).

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

5718640 is a wasteful number, since it uses less digits than its factorization.

5718640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71496 (or 71490 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 5718640 is about 2391.3678094346. The cubic root of 5718640 is about 178.8261057896.

The spelling of 5718640 in words is "five million, seven hundred eighteen thousand, six hundred forty".