722651371 has 4 divisors (see below), whose sum is σ = 778239952. Its totient is φ = 667062792.

The previous prime is 722651359. The next prime is 722651387. The reversal of 722651371 is 173156227.

722651371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173156227 = 43 ⋅4026889.

It is a cyclic number.

It is not a de Polignac number, because 722651371 - 2¹³ = 722643179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722651311) 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, 27794271 + ... + 27794296.

It is an arithmetic number, because the mean of its divisors is an integer number (194559988).

Almost surely, 2^722651371 is an apocalyptic number.

722651371 is a deficient number, since it is larger than the sum of its proper divisors (55588581).

722651371 is a wasteful number, since it uses less digits than its factorization.

722651371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55588580.

The product of its digits is 17640, while the sum is 34.

The square root of 722651371 is about 26882.1757117983. The cubic root of 722651371 is about 897.3797744519.

The spelling of 722651371 in words is "seven hundred twenty-two million, six hundred fifty-one thousand, three hundred seventy-one".