5665626 has 40 divisors (see below), whose sum is σ = 13020084. Its totient is φ = 1840320.

The previous prime is 5665609. The next prime is 5665631. The reversal of 5665626 is 6265665.

It can be written as a sum of positive squares in 2 ways, for example, as 4100625 + 1565001 = 2025^2 + 1251^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6216 + ... + 7068.

Almost surely, 2^5665626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5665626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6510042).

5665626 is an abundant number, since it is smaller than the sum of its proper divisors (7354458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5665626 is a wasteful number, since it uses less digits than its factorization.

5665626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 899 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 5665626 is about 2380.2575490900. The cubic root of 5665626 is about 178.2717936748.

The spelling of 5665626 in words is "five million, six hundred sixty-five thousand, six hundred twenty-six".