5664997 has 4 divisors (see below), whose sum is σ = 6100780. Its totient is φ = 5229216.

The previous prime is 5664991. The next prime is 5665013. The reversal of 5664997 is 7994665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3818116 + 1846881 = 1954^2 + 1359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5664997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664991) 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, 217872 + ... + 217897.

It is an arithmetic number, because the mean of its divisors is an integer number (1525195).

Almost surely, 2^5664997 is an apocalyptic number.

It is an amenable number.

5664997 is a deficient number, since it is larger than the sum of its proper divisors (435783).

5664997 is a wasteful number, since it uses less digits than its factorization.

5664997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435782.

The product of its digits is 408240, while the sum is 46.

The square root of 5664997 is about 2380.1254168636. The cubic root of 5664997 is about 178.2651961627.

The spelling of 5664997 in words is "five million, six hundred sixty-four thousand, nine hundred ninety-seven".