8691541 has 2 divisors, whose sum is σ = 8691542. Its totient is φ = 8691540.

The previous prime is 8691509. The next prime is 8691581. The reversal of 8691541 is 1451968.

8691541 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., 8242641 + 448900 = 2871^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 8691541 - 2⁵ = 8691509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8691497 and 8691506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8691581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4345770 + 4345771.

It is an arithmetic number, because the mean of its divisors is an integer number (4345771).

Almost surely, 2^8691541 is an apocalyptic number.

It is an amenable number.

8691541 is a deficient number, since it is larger than the sum of its proper divisors (1).

8691541 is an equidigital number, since it uses as much as digits as its factorization.

8691541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 34.

The square root of 8691541 is about 2948.1419572334. The cubic root of 8691541 is about 205.6043321091.

The spelling of 8691541 in words is "eight million, six hundred ninety-one thousand, five hundred forty-one".