722760729 has 8 divisors (see below), whose sum is σ = 1020368160. Its totient is φ = 453496896.

The previous prime is 722760721. The next prime is 722760737. The reversal of 722760729 is 927067227.

It is an interprime number because it is at equal distance from previous prime (722760721) and next prime (722760737).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 722760729 - 2³ = 722760721 is a prime.

It is a super-2 number, since 2×722760729² = 1044766142769222882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (722760721) 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 7 ways as a sum of consecutive naturals, for example, 7085839 + ... + 7085940.

It is an arithmetic number, because the mean of its divisors is an integer number (127546020).

Almost surely, 2^722760729 is an apocalyptic number.

It is an amenable number.

722760729 is a deficient number, since it is larger than the sum of its proper divisors (297607431).

722760729 is a wasteful number, since it uses less digits than its factorization.

722760729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14171799.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 722760729 is about 26884.2096592033. The cubic root of 722760729 is about 897.4250386515.

The spelling of 722760729 in words is "seven hundred twenty-two million, seven hundred sixty thousand, seven hundred twenty-nine".