540679 has 2 divisors, whose sum is σ = 540680. Its totient is φ = 540678.

The previous prime is 540677. The next prime is 540689. The reversal of 540679 is 976045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540679 - 2¹ = 540677 is a prime.

Together with 540677, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 540679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270339 + 270340.

It is an arithmetic number, because the mean of its divisors is an integer number (270340).

2⁵⁴⁰⁶⁷⁹ is an apocalyptic number.

540679 is a deficient number, since it is larger than the sum of its proper divisors (1).

540679 is an equidigital number, since it uses as much as digits as its factorization.

540679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 540679 is about 735.3087786774. The cubic root of 540679 is about 81.4666454904.

The spelling of 540679 in words is "five hundred forty thousand, six hundred seventy-nine".