840727 has 2 divisors, whose sum is σ = 840728. Its totient is φ = 840726.

The previous prime is 840713. The next prime is 840733. The reversal of 840727 is 727048.

840727 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 is a cyclic number.

It is not a de Polignac number, because 840727 - 2¹⁹ = 316439 is a prime.

It is a Chen prime.

840727 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 840695 and 840704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420363 + 420364.

It is an arithmetic number, because the mean of its divisors is an integer number (420364).

2⁸⁴⁰⁷²⁷ is an apocalyptic number.

840727 is a deficient number, since it is larger than the sum of its proper divisors (1).

840727 is an equidigital number, since it uses as much as digits as its factorization.

840727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 840727 is about 916.9116642294. The cubic root of 840727 is about 94.3810921027.

The spelling of 840727 in words is "eight hundred forty thousand, seven hundred twenty-seven".