722752641 has 24 divisors (see below), whose sum is σ = 1125423936. Its totient is φ = 444319200.

The previous prime is 722752607. The next prime is 722752663. The reversal of 722752641 is 146257227.

It is a happy number.

722752641 is a `hidden beast` number, since 7 + 2 + 2 + 7 + 5 + 2 + 641 = 666.

It is not a de Polignac number, because 722752641 - 2¹¹ = 722750593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722752596 and 722752605.

It is not an unprimeable number, because it can be changed into a prime (722752691) 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 23 ways as a sum of consecutive naturals, for example, 140566 + ... + 145616.

It is an arithmetic number, because the mean of its divisors is an integer number (46892664).

Almost surely, 2^722752641 is an apocalyptic number.

It is an amenable number.

722752641 is a deficient number, since it is larger than the sum of its proper divisors (402671295).

722752641 is a wasteful number, since it uses less digits than its factorization.

722752641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293 (or 6290 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 722752641 is about 26884.0592359115. The cubic root of 722752641 is about 897.4216911163.

The spelling of 722752641 in words is "seven hundred twenty-two million, seven hundred fifty-two thousand, six hundred forty-one".