868694562 has 18 divisors (see below), whose sum is σ = 1882442523. Its totient is φ = 289523172.

The previous prime is 868694551. The next prime is 868694569. The reversal of 868694562 is 265496868.

It is a happy number.

868694562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 434347281 + 434347281 = 20841^2 + 20841^2 .

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

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20841.

It is a junction number, because it is equal to n+sod(n) for n = 868694499 and 868694508.

It is not an unprimeable number, because it can be changed into a prime (868694569) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 121573 + ... + 128519.

Almost surely, 2^868694562 is an apocalyptic number.

868694562 is an abundant number, since it is smaller than the sum of its proper divisors (1013747961).

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

868694562 is an frugal number, since it uses more digits than its factorization.

868694562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902 (or 6952 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 868694562 is about 29473.6248534177. The cubic root of 868694562 is about 954.1625515770.

The spelling of 868694562 in words is "eight hundred sixty-eight million, six hundred ninety-four thousand, five hundred sixty-two".