722221573 has 4 divisors (see below), whose sum is σ = 722796480. Its totient is φ = 721646668.

The previous prime is 722221567. The next prime is 722221583. The reversal of 722221573 is 375122227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 375122227 = 31 ⋅12100717.

It is a cyclic number.

It is not a de Polignac number, because 722221573 - 2¹³ = 722213381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722221583) 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, 285565 + ... + 288082.

It is an arithmetic number, because the mean of its divisors is an integer number (180699120).

Almost surely, 2^722221573 is an apocalyptic number.

It is an amenable number.

722221573 is a deficient number, since it is larger than the sum of its proper divisors (574907).

722221573 is a wasteful number, since it uses less digits than its factorization.

722221573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574906.

The product of its digits is 11760, while the sum is 31.

The square root of 722221573 is about 26874.1804154099. The cubic root of 722221573 is about 897.2018331759.

The spelling of 722221573 in words is "seven hundred twenty-two million, two hundred twenty-one thousand, five hundred seventy-three".