546661 has 2 divisors, whose sum is σ = 546662. Its totient is φ = 546660.

The previous prime is 546643. The next prime is 546671. The reversal of 546661 is 166645.

546661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481636 + 65025 = 694^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 546661 - 2⁹ = 546149 is a prime.

546661 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273330 + 273331.

It is an arithmetic number, because the mean of its divisors is an integer number (273331).

2⁵⁴⁶⁶⁶¹ is an apocalyptic number.

It is an amenable number.

546661 is a deficient number, since it is larger than the sum of its proper divisors (1).

546661 is an equidigital number, since it uses as much as digits as its factorization.

546661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 546661 is about 739.3652683214. The cubic root of 546661 is about 81.7659895716.

The spelling of 546661 in words is "five hundred forty-six thousand, six hundred sixty-one".