547681 has 2 divisors, whose sum is σ = 547682. Its totient is φ = 547680.

The previous prime is 547663. The next prime is 547709. The reversal of 547681 is 186745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547600 + 81 = 740^2 + 9^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-547681 is a prime.

It is a super-2 number, since 2×547681² = 599908955522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (547601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273840 + 273841.

It is an arithmetic number, because the mean of its divisors is an integer number (273841).

2⁵⁴⁷⁶⁸¹ is an apocalyptic number.

It is an amenable number.

547681 is a deficient number, since it is larger than the sum of its proper divisors (1).

547681 is an equidigital number, since it uses as much as digits as its factorization.

547681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 547681 is about 740.0547277060. The cubic root of 547681 is about 81.8168129588.

It can be divided in two parts, 5476 and 81, that multiplied together give a square (443556 = 666²).

The spelling of 547681 in words is "five hundred forty-seven thousand, six hundred eighty-one".