722390205 has 16 divisors (see below), whose sum is σ = 1156173120. Its totient is φ = 385158528.

The previous prime is 722390189. The next prime is 722390209. The reversal of 722390205 is 502093227.

It is a happy number.

It is not a de Polignac number, because 722390205 - 2⁴ = 722390189 is a prime.

It is a super-4 number, since 4×722390205⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722390209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71986 + ... + 81404.

It is an arithmetic number, because the mean of its divisors is an integer number (72260820).

Almost surely, 2^722390205 is an apocalyptic number.

It is an amenable number.

722390205 is a deficient number, since it is larger than the sum of its proper divisors (433782915).

722390205 is a wasteful number, since it uses less digits than its factorization.

722390205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14540.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 722390205 is about 26877.3176675054. The cubic root of 722390205 is about 897.2716571613.

The spelling of 722390205 in words is "seven hundred twenty-two million, three hundred ninety thousand, two hundred five".