886385872687669 has 4 divisors (see below), whose sum is σ = 886395846400396. Its totient is φ = 886375898974944.

The previous prime is 886385872687661. The next prime is 886385872687697. The reversal of 886385872687669 is 966786278583688.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 729511199586225 + 156874673101444 = 27009465^2 + 12524962^2 .

It is a cyclic number.

It is not a de Polignac number, because 886385872687669 - 2³ = 886385872687661 is a prime.

It is a super-2 number, since 2×886385872687669² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (886385872687661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4986723054 + ... + 4986900799.

It is an arithmetic number, because the mean of its divisors is an integer number (221598961600099).

Almost surely, 2^{886385872687669} is an apocalyptic number.

It is an amenable number.

886385872687669 is a deficient number, since it is larger than the sum of its proper divisors (9973712727).

886385872687669 is an equidigital number, since it uses as much as digits as its factorization.

886385872687669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9973712726.

The product of its digits is 561842749440, while the sum is 97.

The spelling of 886385872687669 in words is "eight hundred eighty-six trillion, three hundred eighty-five billion, eight hundred seventy-two million, six hundred eighty-seven thousand, six hundred sixty-nine".