865678675968 has 416 divisors, whose sum is σ = 2665207238400. Its totient is φ = 277453209600.

The previous prime is 865678675889. The next prime is 865678675993. The reversal of 865678675968 is 869576876568.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321931968 + ... + 321934656.

Almost surely, 2^865678675968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865678675968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332603619200).

865678675968 is an abundant number, since it is smaller than the sum of its proper divisors (1799528562432).

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

865678675968 is a wasteful number, since it uses less digits than its factorization.

865678675968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2806 counting only the distinct ones).

The product of its digits is 7315660800, while the sum is 81.

The spelling of 865678675968 in words is "eight hundred sixty-five billion, six hundred seventy-eight million, six hundred seventy-five thousand, nine hundred sixty-eight".