6644622664606 has 16 divisors (see below), whose sum is σ = 9979902913248. Its totient is φ = 3317990860800.

The previous prime is 6644622664549. The next prime is 6644622664609. The reversal of 6644622664606 is 6064662264466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644622664609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4705746 + ... + 5952586.

It is an arithmetic number, because the mean of its divisors is an integer number (623743932078).

Almost surely, 2^{6644622664606} is an apocalyptic number.

6644622664606 is a deficient number, since it is larger than the sum of its proper divisors (3335280248642).

6644622664606 is a wasteful number, since it uses less digits than its factorization.

6644622664606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250307.

The product of its (nonzero) digits is 71663616, while the sum is 58.

The spelling of 6644622664606 in words is "six trillion, six hundred forty-four billion, six hundred twenty-two million, six hundred sixty-four thousand, six hundred six".