5638965 has 8 divisors (see below), whose sum is σ = 9022368. Its totient is φ = 3007440.

The previous prime is 5638961. The next prime is 5638967. The reversal of 5638965 is 5698365.

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

It is not a de Polignac number, because 5638965 - 2² = 5638961 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638961) 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, 187951 + ... + 187980.

It is an arithmetic number, because the mean of its divisors is an integer number (1127796).

Almost surely, 2^5638965 is an apocalyptic number.

It is an amenable number.

5638965 is a deficient number, since it is larger than the sum of its proper divisors (3383403).

5638965 is a wasteful number, since it uses less digits than its factorization.

5638965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375939.

The product of its digits is 194400, while the sum is 42.

The square root of 5638965 is about 2374.6505006000. The cubic root of 5638965 is about 177.9917199363.

The spelling of 5638965 in words is "five million, six hundred thirty-eight thousand, nine hundred sixty-five".