722872617 has 4 divisors (see below), whose sum is σ = 963830160. Its totient is φ = 481915076.

The previous prime is 722872609. The next prime is 722872637. The reversal of 722872617 is 716278227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722872617 - 2³ = 722872609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722872607) 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 3 ways as a sum of consecutive naturals, for example, 120478767 + ... + 120478772.

It is an arithmetic number, because the mean of its divisors is an integer number (240957540).

Almost surely, 2^722872617 is an apocalyptic number.

It is an amenable number.

722872617 is a deficient number, since it is larger than the sum of its proper divisors (240957543).

722872617 is a wasteful number, since it uses less digits than its factorization.

722872617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240957542.

The product of its digits is 131712, while the sum is 42.

The square root of 722872617 is about 26886.2905027823. The cubic root of 722872617 is about 897.4713453141.

The spelling of 722872617 in words is "seven hundred twenty-two million, eight hundred seventy-two thousand, six hundred seventeen".