722173017 has 4 divisors (see below), whose sum is σ = 962897360. Its totient is φ = 481448676.

The previous prime is 722172977. The next prime is 722173027. The reversal of 722173017 is 710371227.

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 not a de Polignac number, because 722173017 - 2⁶ = 722172953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722173027) 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, 120362167 + ... + 120362172.

It is an arithmetic number, because the mean of its divisors is an integer number (240724340).

Almost surely, 2^722173017 is an apocalyptic number.

It is an amenable number.

722173017 is a deficient number, since it is larger than the sum of its proper divisors (240724343).

722173017 is a wasteful number, since it uses less digits than its factorization.

722173017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240724342.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 722173017 is about 26873.2770052333. The cubic root of 722173017 is about 897.1817260000.

The spelling of 722173017 in words is "seven hundred twenty-two million, one hundred seventy-three thousand, seventeen".