840706541 has 2 divisors, whose sum is σ = 840706542. Its totient is φ = 840706540.

The previous prime is 840706523. The next prime is 840706561. The reversal of 840706541 is 145607048.

840706541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 636502441 + 204204100 = 25229^2 + 14290^2 .

It is a cyclic number.

It is not a de Polignac number, because 840706541 - 2²⁶ = 773597677 is a prime.

It is a Chen prime.

It is equal to p_43129763 and since 840706541 and 43129763 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840706561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420353270 + 420353271.

It is an arithmetic number, because the mean of its divisors is an integer number (420353271).

Almost surely, 2^840706541 is an apocalyptic number.

It is an amenable number.

840706541 is a deficient number, since it is larger than the sum of its proper divisors (1).

840706541 is an equidigital number, since it uses as much as digits as its factorization.

840706541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 840706541 is about 28994.9399206137. The cubic root of 840706541 is about 943.8032651193.

The spelling of 840706541 in words is "eight hundred forty million, seven hundred six thousand, five hundred forty-one".