6618722 has 8 divisors (see below), whose sum is σ = 10830672. Its totient is φ = 3008500.

The previous prime is 6618713. The next prime is 6618727. The reversal of 6618722 is 2278166.

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

It is not an unprimeable number, because it can be changed into a prime (6618727) 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 3 ways as a sum of consecutive naturals, for example, 150404 + ... + 150447.

It is an arithmetic number, because the mean of its divisors is an integer number (1353834).

Almost surely, 2^6618722 is an apocalyptic number.

6618722 is a deficient number, since it is larger than the sum of its proper divisors (4211950).

6618722 is a wasteful number, since it uses less digits than its factorization.

6618722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300864.

The product of its digits is 8064, while the sum is 32.

The square root of 6618722 is about 2572.6876996635. The cubic root of 6618722 is about 187.7549432712.

The spelling of 6618722 in words is "six million, six hundred eighteen thousand, seven hundred twenty-two".