546720961 has 2 divisors, whose sum is σ = 546720962. Its totient is φ = 546720960.

The previous prime is 546720959. The next prime is 546720997. The reversal of 546720961 is 169027645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 527850625 + 18870336 = 22975^2 + 4344^2 .

It is a cyclic number.

It is not a de Polignac number, because 546720961 - 2¹ = 546720959 is a prime.

Together with 546720959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (546720931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273360480 + 273360481.

It is an arithmetic number, because the mean of its divisors is an integer number (273360481).

Almost surely, 2^546720961 is an apocalyptic number.

It is an amenable number.

546720961 is a deficient number, since it is larger than the sum of its proper divisors (1).

546720961 is an equidigital number, since it uses as much as digits as its factorization.

546720961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 546720961 is about 23382.0649430284. The cubic root of 546720961 is about 817.6897898748.

The spelling of 546720961 in words is "five hundred forty-six million, seven hundred twenty thousand, nine hundred sixty-one".