5561766 has 48 divisors (see below), whose sum is σ = 14156064. Its totient is φ = 1544832.

The previous prime is 5561719. The next prime is 5561779. The reversal of 5561766 is 6671655.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5561766.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 4066 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (294918).

Almost surely, 2^5561766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5561766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7078032).

5561766 is an abundant number, since it is smaller than the sum of its proper divisors (8594298).

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

5561766 is a wasteful number, since it uses less digits than its factorization.

5561766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1242 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 5561766 is about 2358.3396701917. The cubic root of 5561766 is about 177.1757327740.

The spelling of 5561766 in words is "five million, five hundred sixty-one thousand, seven hundred sixty-six".