876540321 has 6 divisors (see below), whose sum is σ = 1266113810. Its totient is φ = 584360208.

The previous prime is 876540289. The next prime is 876540331. The reversal of 876540321 is 123045678.

876540321 is a `hidden beast` number, since 87 + 6 + 540 + 32 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 810199296 + 66341025 = 28464^2 + 8145^2 .

It is not a de Polignac number, because 876540321 - 2⁵ = 876540289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (876540331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48696676 + ... + 48696693.

Almost surely, 2^876540321 is an apocalyptic number.

It is an amenable number.

876540321 is a deficient number, since it is larger than the sum of its proper divisors (389573489).

876540321 is a wasteful number, since it uses less digits than its factorization.

876540321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97393375 (or 97393372 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 876540321 is about 29606.4236442026. The cubic root of 876540321 is about 957.0265058188.

Adding to 876540321 its reverse (123045678), we get a palindrome (999585999).

The spelling of 876540321 in words is "eight hundred seventy-six million, five hundred forty thousand, three hundred twenty-one".