722143618 has 16 divisors (see below), whose sum is σ = 1240041600. Its totient is φ = 308969856.

The previous prime is 722143613. The next prime is 722143691. The reversal of 722143618 is 816341227.

It is not an unprimeable number, because it can be changed into a prime (722143613) 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 7 ways as a sum of consecutive naturals, for example, 34671 + ... + 51442.

It is an arithmetic number, because the mean of its divisors is an integer number (77502600).

Almost surely, 2^722143618 is an apocalyptic number.

722143618 is a deficient number, since it is larger than the sum of its proper divisors (517897982).

722143618 is a wasteful number, since it uses less digits than its factorization.

722143618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86721.

The product of its digits is 16128, while the sum is 34.

The square root of 722143618 is about 26872.7300064582. The cubic root of 722143618 is about 897.1695513536.

The spelling of 722143618 in words is "seven hundred twenty-two million, one hundred forty-three thousand, six hundred eighteen".