8540861 has 8 divisors (see below), whose sum is σ = 10274880. Its totient is φ = 6935328.

The previous prime is 8540849. The next prime is 8540867. The reversal of 8540861 is 1680458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8540861 - 2²² = 4346557 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31976 + ... + 32241.

It is an arithmetic number, because the mean of its divisors is an integer number (1284360).

Almost surely, 2^8540861 is an apocalyptic number.

It is an amenable number.

8540861 is a deficient number, since it is larger than the sum of its proper divisors (1734019).

8540861 is a wasteful number, since it uses less digits than its factorization.

8540861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64243.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 8540861 is about 2922.4751495949. The cubic root of 8540861 is about 204.4092530817.

The spelling of 8540861 in words is "eight million, five hundred forty thousand, eight hundred sixty-one".