722226757 has 8 divisors (see below), whose sum is σ = 830467136. Its totient is φ = 615252672.

The previous prime is 722226721. The next prime is 722226761. The reversal of 722226757 is 757622227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722226757 is a prime.

It is a super-2 number, since 2×722226757² = 1043222977053474098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722220757) 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, 315348 + ... + 317629.

It is an arithmetic number, because the mean of its divisors is an integer number (103808392).

Almost surely, 2^722226757 is an apocalyptic number.

It is an amenable number.

722226757 is a deficient number, since it is larger than the sum of its proper divisors (108240379).

722226757 is a wasteful number, since it uses less digits than its factorization.

722226757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633147.

The product of its digits is 164640, while the sum is 40.

The square root of 722226757 is about 26874.2768646898. The cubic root of 722226757 is about 897.2039798316.

The spelling of 722226757 in words is "seven hundred twenty-two million, two hundred twenty-six thousand, seven hundred fifty-seven".