868990068 has 18 divisors (see below), whose sum is σ = 2196613874. Its totient is φ = 289663344.

The previous prime is 868990033. The next prime is 868990081. The reversal of 868990068 is 860099868.

It can be written as a sum of positive squares in only one way, i.e., 588159504 + 280830564 = 24252^2 + 16758^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 868989996 and 868990023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12069271 + ... + 12069342.

Almost surely, 2^868990068 is an apocalyptic number.

It is an amenable number.

868990068 is an abundant number, since it is smaller than the sum of its proper divisors (1327623806).

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

868990068 is a wasteful number, since it uses less digits than its factorization.

868990068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24138623 (or 24138618 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 868990068 is about 29478.6374854741. The cubic root of 868990068 is about 954.2707325977.

The spelling of 868990068 in words is "eight hundred sixty-eight million, nine hundred ninety thousand, sixty-eight".