5697640 has 32 divisors (see below), whose sum is σ = 13807080. Its totient is φ = 2103552.

The previous prime is 5697631. The next prime is 5697641. The reversal of 5697640 is 467965.

5697640 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3896676 + 1800964 = 1974^2 + 1342^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5697640.

It is not an unprimeable number, because it can be changed into a prime (5697641) by changing a digit.

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, 4959 + ... + 5998.

Almost surely, 2^5697640 is an apocalyptic number.

It is an amenable number.

5697640 is an abundant number, since it is smaller than the sum of its proper divisors (8109440).

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

5697640 is a wasteful number, since it uses less digits than its factorization.

5697640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10981 (or 10977 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 5697640 is about 2386.9729784813. The cubic root of 5697640 is about 178.6069421177.

The spelling of 5697640 in words is "five million, six hundred ninety-seven thousand, six hundred forty".