5745640 has 24 divisors (see below), whose sum is σ = 12961890. Its totient is φ = 2292192.

The previous prime is 5745631. The next prime is 5745647. The reversal of 5745640 is 465475.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5171076 + 574564 = 2274^2 + 758^2 .

It is not an unprimeable number, because it can be changed into a prime (5745647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14971 + ... + 15349.

Almost surely, 2^5745640 is an apocalyptic number.

It is an amenable number.

5745640 is an abundant number, since it is smaller than the sum of its proper divisors (7216250).

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

5745640 is an equidigital number, since it uses as much as digits as its factorization.

5745640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 5745640 is about 2397.0064664076. The cubic root of 5745640 is about 179.1071006844.

Subtracting from 5745640 its sum of digits (31), we obtain a square (5745609 = 2397²).

The spelling of 5745640 in words is "five million, seven hundred forty-five thousand, six hundred forty".