867825857 has 8 divisors (see below), whose sum is σ = 908421696. Its totient is φ = 827468752.

The previous prime is 867825799. The next prime is 867825863. The reversal of 867825857 is 758528768.

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 867825857 - 2⁸ = 867825601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (867825457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52223 + ... + 66804.

It is an arithmetic number, because the mean of its divisors is an integer number (113552712).

Almost surely, 2^867825857 is an apocalyptic number.

It is an amenable number.

867825857 is a deficient number, since it is larger than the sum of its proper divisors (40595839).

867825857 is a wasteful number, since it uses less digits than its factorization.

867825857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119367.

The product of its digits is 7526400, while the sum is 56.

The square root of 867825857 is about 29458.8841777824. The cubic root of 867825857 is about 953.8443874919.

The spelling of 867825857 in words is "eight hundred sixty-seven million, eight hundred twenty-five thousand, eight hundred fifty-seven".