867878575 has 24 divisors (see below), whose sum is σ = 1087015248. Its totient is φ = 687348480.

The previous prime is 867878567. The next prime is 867878579. The reversal of 867878575 is 575878768.

It is not a de Polignac number, because 867878575 - 2³ = 867878567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867878579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1541244 + ... + 1541806.

It is an arithmetic number, because the mean of its divisors is an integer number (45292302).

Almost surely, 2^867878575 is an apocalyptic number.

867878575 is a deficient number, since it is larger than the sum of its proper divisors (219136673).

867878575 is a wasteful number, since it uses less digits than its factorization.

867878575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1078 counting only the distinct ones).

The product of its digits is 26342400, while the sum is 61.

The square root of 867878575 is about 29459.7789367130. The cubic root of 867878575 is about 953.8637015627.

The spelling of 867878575 in words is "eight hundred sixty-seven million, eight hundred seventy-eight thousand, five hundred seventy-five".