722206667 has 16 divisors (see below), whose sum is σ = 890292480. Its totient is φ = 570501792.

The previous prime is 722206657. The next prime is 722206741. The reversal of 722206667 is 766602227.

It is not a de Polignac number, because 722206667 - 2⁴ = 722206651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722206667.

It is not an unprimeable number, because it can be changed into a prime (722206637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53948 + ... + 65990.

It is an arithmetic number, because the mean of its divisors is an integer number (55643280).

Almost surely, 2^722206667 is an apocalyptic number.

722206667 is a deficient number, since it is larger than the sum of its proper divisors (168085813).

722206667 is a wasteful number, since it uses less digits than its factorization.

722206667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12722.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 722206667 is about 26873.9030845912. The cubic root of 722206667 is about 897.1956606553.

It can be divided in two parts, 72220 and 6667, that added together give a palindrome (78887).

The spelling of 722206667 in words is "seven hundred twenty-two million, two hundred six thousand, six hundred sixty-seven".