878540001 has 8 divisors (see below), whose sum is σ = 1171686240. Its totient is φ = 585543552.

The previous prime is 878539939. The next prime is 878540011. The reversal of 878540001 is 100045878.

It is a happy number.

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

It is not a de Polignac number, because 878540001 - 2¹⁹ = 878015713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878540011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22960 + ... + 47793.

It is an arithmetic number, because the mean of its divisors is an integer number (146460780).

Almost surely, 2^878540001 is an apocalyptic number.

It is an amenable number.

878540001 is a deficient number, since it is larger than the sum of its proper divisors (293146239).

878540001 is a wasteful number, since it uses less digits than its factorization.

878540001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74895.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 878540001 is about 29640.1754549463. The cubic root of 878540001 is about 957.7537183464.

Adding to 878540001 its reverse (100045878), we get a palindrome (978585879).

The spelling of 878540001 in words is "eight hundred seventy-eight million, five hundred forty thousand, one".