546721 has 8 divisors (see below), whose sum is σ = 633024. Its totient is φ = 462480.

The previous prime is 546719. The next prime is 546731. The reversal of 546721 is 127645.

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 546721 - 2¹ = 546719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (546731) 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, 111 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (79128).

2⁵⁴⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

546721 is a deficient number, since it is larger than the sum of its proper divisors (86303).

546721 is an equidigital number, since it uses as much as digits as its factorization.

546721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 1680, while the sum is 25.

The square root of 546721 is about 739.4058425520. The cubic root of 546721 is about 81.7689809318.

The spelling of 546721 in words is "five hundred forty-six thousand, seven hundred twenty-one".