5665239 has 24 divisors (see below), whose sum is σ = 8536320. Its totient is φ = 3617808.

The previous prime is 5665217. The next prime is 5665243. The reversal of 5665239 is 9325665.

5665239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5665239 - 2¹² = 5661143 is a prime.

It is a super-3 number, since 3×5665239³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24844 + ... + 25070.

It is an arithmetic number, because the mean of its divisors is an integer number (355680).

Almost surely, 2^5665239 is an apocalyptic number.

5665239 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

5665239 is a deficient number, since it is larger than the sum of its proper divisors (2871081).

5665239 is a wasteful number, since it uses less digits than its factorization.

5665239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 336 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 5665239 is about 2380.1762539778. The cubic root of 5665239 is about 178.2677345320.

The spelling of 5665239 in words is "five million, six hundred sixty-five thousand, two hundred thirty-nine".