868686629923 has 8 divisors (see below), whose sum is σ = 992791918592. Its totient is φ = 744583140936.

The previous prime is 868686629911. The next prime is 868686629957. The reversal of 868686629923 is 329926686868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868686629923 - 2²⁵ = 868653075491 is a prime.

It is a super-2 number, since 2×868686629923² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868686629903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825436 + ... + 1555222.

It is an arithmetic number, because the mean of its divisors is an integer number (124098989824).

Almost surely, 2^868686629923 is an apocalyptic number.

868686629923 is a deficient number, since it is larger than the sum of its proper divisors (124105288669).

868686629923 is a wasteful number, since it uses less digits than its factorization.

868686629923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899841.

The product of its digits is 644972544, while the sum is 73.

The spelling of 868686629923 in words is "eight hundred sixty-eight billion, six hundred eighty-six million, six hundred twenty-nine thousand, nine hundred twenty-three".