720461 has 8 divisors (see below), whose sum is σ = 866880. Its totient is φ = 584928.

The previous prime is 720439. The next prime is 720481. The reversal of 720461 is 164027.

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 720461 - 2⁶ = 720397 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720461.

It is not an unprimeable number, because it can be changed into a prime (720481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576 + ... + 2841.

It is an arithmetic number, because the mean of its divisors is an integer number (108360).

2⁷²⁰⁴⁶¹ is an apocalyptic number.

It is an amenable number.

720461 is a deficient number, since it is larger than the sum of its proper divisors (146419).

720461 is a wasteful number, since it uses less digits than its factorization.

720461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5443.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 720461 is about 848.7997408105. The cubic root of 720461 is about 89.6472198091.

Adding to 720461 its reverse (164027), we get a palindrome (884488).

The spelling of 720461 in words is "seven hundred twenty thousand, four hundred sixty-one".