722785273 has 4 divisors (see below), whose sum is σ = 826040320. Its totient is φ = 619530228.

The previous prime is 722785249. The next prime is 722785291. The reversal of 722785273 is 372587227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722785273 - 2⁹ = 722784761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722785573) 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 3 ways as a sum of consecutive naturals, for example, 51627513 + ... + 51627526.

It is an arithmetic number, because the mean of its divisors is an integer number (206510080).

Almost surely, 2^722785273 is an apocalyptic number.

It is an amenable number.

722785273 is a deficient number, since it is larger than the sum of its proper divisors (103255047).

722785273 is a wasteful number, since it uses less digits than its factorization.

722785273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103255046.

The product of its digits is 329280, while the sum is 43.

The square root of 722785273 is about 26884.6661314587. Note that the first 3 decimals coincide. The cubic root of 722785273 is about 897.4351969929.

The spelling of 722785273 in words is "seven hundred twenty-two million, seven hundred eighty-five thousand, two hundred seventy-three".