5664905 has 8 divisors (see below), whose sum is σ = 6926472. Its totient is φ = 4446208.

The previous prime is 5664851. The next prime is 5664931. The reversal of 5664905 is 5094665.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 170569 + 5494336 = 413^2 + 2344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5664905 - 2¹⁶ = 5599369 is a prime.

It is a super-2 number, since 2×5664905² = 64182297318050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10424 + ... + 10953.

It is an arithmetic number, because the mean of its divisors is an integer number (865809).

Almost surely, 2^5664905 is an apocalyptic number.

It is an amenable number.

5664905 is a deficient number, since it is larger than the sum of its proper divisors (1261567).

5664905 is a wasteful number, since it uses less digits than its factorization.

5664905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 5664905 is about 2380.1060900725. The cubic root of 5664905 is about 178.2642311439.

The spelling of 5664905 in words is "five million, six hundred sixty-four thousand, nine hundred five".