722650536 has 48 divisors (see below), whose sum is σ = 2024673300. Its totient is φ = 232576512.

The previous prime is 722650531. The next prime is 722650549. The reversal of 722650536 is 635056227.

It is a happy number.

722650536 is a `hidden beast` number, since 72 + 2 + 6 + 50 + 536 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 665949636 + 56700900 = 25806^2 + 7530^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 722650536.

It is not an unprimeable number, because it can be changed into a prime (722650531) 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 11 ways as a sum of consecutive naturals, for example, 170961 + ... + 175136.

Almost surely, 2^722650536 is an apocalyptic number.

It is an amenable number.

722650536 is an abundant number, since it is smaller than the sum of its proper divisors (1302022764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722650536 is a wasteful number, since it uses less digits than its factorization.

722650536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346138 (or 346131 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 722650536 is about 26882.1601810569. The cubic root of 722650536 is about 897.3794288208.

The spelling of 722650536 in words is "seven hundred twenty-two million, six hundred fifty thousand, five hundred thirty-six".