5661406 has 16 divisors (see below), whose sum is σ = 8847360. Its totient is φ = 2714040.

The previous prime is 5661401. The next prime is 5661419. The reversal of 5661406 is 6041665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7515 + ... + 8233.

It is an arithmetic number, because the mean of its divisors is an integer number (552960).

Almost surely, 2^5661406 is an apocalyptic number.

5661406 is a deficient number, since it is larger than the sum of its proper divisors (3185954).

5661406 is a wasteful number, since it uses less digits than its factorization.

5661406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 5661406 is about 2379.3709252658. The cubic root of 5661406 is about 178.2275212014.

The spelling of 5661406 in words is "five million, six hundred sixty-one thousand, four hundred six".