867825856 has 14 divisors (see below), whose sum is σ = 1722092060. Its totient is φ = 433912896.

The previous prime is 867825799. The next prime is 867825863. The reversal of 867825856 is 658528768.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 867825797 and 867825806.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6779826 + ... + 6779953.

Almost surely, 2^867825856 is an apocalyptic number.

It is an amenable number.

867825856 is a deficient number, since it is larger than the sum of its proper divisors (854266204).

867825856 is a wasteful number, since it uses less digits than its factorization.

867825856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13559791 (or 13559781 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 55.

The square root of 867825856 is about 29458.8841608096. The cubic root of 867825856 is about 953.8443871255.

The spelling of 867825856 in words is "eight hundred sixty-seven million, eight hundred twenty-five thousand, eight hundred fifty-six".