722671 has 4 divisors (see below), whose sum is σ = 727432. Its totient is φ = 717912.

The previous prime is 722669. The next prime is 722713. The reversal of 722671 is 176227.

722671 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722671 - 2¹ = 722669 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 (722611) 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, 2145 + ... + 2458.

It is an arithmetic number, because the mean of its divisors is an integer number (181858).

2⁷²²⁶⁷¹ is an apocalyptic number.

722671 is a deficient number, since it is larger than the sum of its proper divisors (4761).

722671 is a wasteful number, since it uses less digits than its factorization.

722671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760.

The product of its digits is 1176, while the sum is 25.

The square root of 722671 is about 850.1005822842. The cubic root of 722671 is about 89.7387899397.

Adding to 722671 its reverse (176227), we get a palindrome (898898).

The spelling of 722671 in words is "seven hundred twenty-two thousand, six hundred seventy-one".