6645634 has 8 divisors (see below), whose sum is σ = 10010880. Its totient is φ = 3308676.

The previous prime is 6645619. The next prime is 6645637. The reversal of 6645634 is 4365466.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6645634.

It is not an unprimeable number, because it can be changed into a prime (6645637) 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, 6474 + ... + 7429.

It is an arithmetic number, because the mean of its divisors is an integer number (1251360).

Almost surely, 2^6645634 is an apocalyptic number.

6645634 is a deficient number, since it is larger than the sum of its proper divisors (3365246).

6645634 is a wasteful number, since it uses less digits than its factorization.

6645634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14144.

The product of its digits is 51840, while the sum is 34.

The square root of 6645634 is about 2577.9127215637. The cubic root of 6645634 is about 188.0090722950.

The spelling of 6645634 in words is "six million, six hundred forty-five thousand, six hundred thirty-four".