722461 has 8 divisors (see below), whose sum is σ = 753984. Its totient is φ = 691680.

The previous prime is 722459. The next prime is 722467. The reversal of 722461 is 164227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 722461 - 2¹ = 722459 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616 + ... + 2878.

It is an arithmetic number, because the mean of its divisors is an integer number (94248).

2⁷²²⁴⁶¹ is an apocalyptic number.

It is an amenable number.

722461 is a deficient number, since it is larger than the sum of its proper divisors (31523).

722461 is a wasteful number, since it uses less digits than its factorization.

722461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its digits is 672, while the sum is 22.

The square root of 722461 is about 849.9770585139. The cubic root of 722461 is about 89.7300967393.

Adding to 722461 its reverse (164227), we get a palindrome (886688).

The spelling of 722461 in words is "seven hundred twenty-two thousand, four hundred sixty-one".