722650216 has 8 divisors (see below), whose sum is σ = 1354969170. Its totient is φ = 361325104.

The previous prime is 722650211. The next prime is 722650241. The reversal of 722650216 is 612056227.

It can be written as a sum of positive squares in only one way, i.e., 721137316 + 1512900 = 26854^2 + 1230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (722650211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45165631 + ... + 45165646.

Almost surely, 2^722650216 is an apocalyptic number.

It is an amenable number.

722650216 is a deficient number, since it is larger than the sum of its proper divisors (632318954).

722650216 is a wasteful number, since it uses less digits than its factorization.

722650216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90331283 (or 90331279 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 722650216 is about 26882.1542291536. The cubic root of 722650216 is about 897.3792963633.

The spelling of 722650216 in words is "seven hundred twenty-two million, six hundred fifty thousand, two hundred sixteen".