5660665 has 16 divisors (see below), whose sum is σ = 7103376. Its totient is φ = 4326400.

The previous prime is 5660663. The next prime is 5660717.

5660665 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 660969 + 4999696 = 813^2 + 2236^2 .

It is not a de Polignac number, because 5660665 - 2¹ = 5660663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5660665.

It is not an unprimeable number, because it can be changed into a prime (5660663) 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, 10605 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (443961).

Almost surely, 2^5660665 is an apocalyptic number.

It is an amenable number.

5660665 is a deficient number, since it is larger than the sum of its proper divisors (1442711).

5660665 is a wasteful number, since it uses less digits than its factorization.

5660665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 5660665 is about 2379.2152067436. The cubic root of 5660665 is about 178.2197450202.

Subtracting from 5660665 its product of nonzero digits (32400), we obtain a palindrome (5628265).

The spelling of 5660665 in words is "five million, six hundred sixty thousand, six hundred sixty-five".