5665605 has 16 divisors (see below), whose sum is σ = 9889344. Its totient is φ = 2746880.

The previous prime is 5665601. The next prime is 5665609. The reversal of 5665605 is 5065665.

It is an interprime number because it is at equal distance from previous prime (5665601) and next prime (5665609).

It is not a de Polignac number, because 5665605 - 2² = 5665601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

5665605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17004 + ... + 17333.

It is an arithmetic number, because the mean of its divisors is an integer number (618084).

Almost surely, 2^5665605 is an apocalyptic number.

5665605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5665605 is a deficient number, since it is larger than the sum of its proper divisors (4223739).

5665605 is a wasteful number, since it uses less digits than its factorization.

5665605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34356.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 5665605 is about 2380.2531377986. The cubic root of 5665605 is about 178.2715734160.

The spelling of 5665605 in words is "five million, six hundred sixty-five thousand, six hundred five".