5649966 has 32 divisors (see below), whose sum is σ = 14350080. Its totient is φ = 1614168.

The previous prime is 5649953. The next prime is 5649977. The reversal of 5649966 is 6699465.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7096 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (448440).

Almost surely, 2^5649966 is an apocalyptic number.

5649966 is an abundant number, since it is smaller than the sum of its proper divisors (8700114).

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

5649966 is a wasteful number, since it uses less digits than its factorization.

5649966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14965 (or 14959 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 5649966 is about 2376.9657128364. The cubic root of 5649966 is about 178.1073921653.

It can be divided in two parts, 56499 and 66, that added together give a palindrome (56565).

The spelling of 5649966 in words is "five million, six hundred forty-nine thousand, nine hundred sixty-six".