12722618 has 8 divisors (see below), whose sum is σ = 19490112. Its totient is φ = 6225916.

The previous prime is 12722603. The next prime is 12722623. The reversal of 12722618 is 81622721.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67580 + ... + 67767.

It is an arithmetic number, because the mean of its divisors is an integer number (2436264).

Almost surely, 2^12722618 is an apocalyptic number.

12722618 is a deficient number, since it is larger than the sum of its proper divisors (6767494).

12722618 is a wasteful number, since it uses less digits than its factorization.

12722618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135396.

The product of its digits is 2688, while the sum is 29.

The square root of 12722618 is about 3566.8779065171. The cubic root of 12722618 is about 233.4490777232.

The spelling of 12722618 in words is "twelve million, seven hundred twenty-two thousand, six hundred eighteen".