5646638 has 8 divisors (see below), whose sum is σ = 8838288. Its totient is φ = 2700544.

The previous prime is 5646637. The next prime is 5646647. The reversal of 5646638 is 8366465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5646637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61331 + ... + 61422.

It is an arithmetic number, because the mean of its divisors is an integer number (1104786).

Almost surely, 2^5646638 is an apocalyptic number.

5646638 is a deficient number, since it is larger than the sum of its proper divisors (3191650).

5646638 is a wasteful number, since it uses less digits than its factorization.

5646638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122778.

The product of its digits is 103680, while the sum is 38.

The square root of 5646638 is about 2376.2655575503. The cubic root of 5646638 is about 178.0724150923.

The spelling of 5646638 in words is "five million, six hundred forty-six thousand, six hundred thirty-eight".