867687678 has 48 divisors (see below), whose sum is σ = 2208666096. Its totient is φ = 242709120.

The previous prime is 867687637. The next prime is 867687679. The reversal of 867687678 is 876786768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867687679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165975 + ... + 171122.

It is an arithmetic number, because the mean of its divisors is an integer number (46013877).

Almost surely, 2^867687678 is an apocalyptic number.

867687678 is an abundant number, since it is smaller than the sum of its proper divisors (1340978418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

867687678 is a wasteful number, since it uses less digits than its factorization.

867687678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337129 (or 337126 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The square root of 867687678 is about 29456.5387987116. The cubic root of 867687678 is about 953.7937597235.

The spelling of 867687678 in words is "eight hundred sixty-seven million, six hundred eighty-seven thousand, six hundred seventy-eight".