722347421357 has 4 divisors (see below), whose sum is σ = 722353467996. Its totient is φ = 722341374720.

The previous prime is 722347421339. The next prime is 722347421371. The reversal of 722347421357 is 753124743227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 665887008361 + 56460412996 = 816019^2 + 237614^2 .

It is a cyclic number.

It is not a de Polignac number, because 722347421357 - 2⁶ = 722347421293 is a prime.

It is a super-2 number, since 2×722347421357² (a number of 25 digits) 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 (722347421377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840438 + ... + 3084279.

It is an arithmetic number, because the mean of its divisors is an integer number (180588366999).

Almost surely, 2^722347421357 is an apocalyptic number.

It is an amenable number.

722347421357 is a deficient number, since it is larger than the sum of its proper divisors (6046639).

722347421357 is a wasteful number, since it uses less digits than its factorization.

722347421357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046638.

The product of its digits is 1975680, while the sum is 47.

The spelling of 722347421357 in words is "seven hundred twenty-two billion, three hundred forty-seven million, four hundred twenty-one thousand, three hundred fifty-seven".