870615228678669 has 12 divisors (see below), whose sum is σ = 1261847328031836. Its totient is φ = 578429230428672.

The previous prime is 870615228678649. The next prime is 870615228678697. The reversal of 870615228678669 is 966876822516078.

870615228678669 is a `hidden beast` number, since 8 + 7 + 0 + 6 + 1 + 522 + 8 + 6 + 7 + 86 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 731884828356900 + 138730400321769 = 27053370^2 + 11778387^2 .

It is not a de Polignac number, because 870615228678669 - 2¹¹ = 870615228676621 is a prime.

It is a super-2 number, since 2×870615228678669² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870615228678649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165076832532 + ... + 165076837805.

It is an arithmetic number, because the mean of its divisors is an integer number (105153944002653).

Almost surely, 2^{870615228678669} is an apocalyptic number.

It is an amenable number.

870615228678669 is a deficient number, since it is larger than the sum of its proper divisors (391232099353167).

870615228678669 is a wasteful number, since it uses less digits than its factorization.

870615228678669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330153670636 (or 330153670633 counting only the distinct ones).

The product of its (nonzero) digits is 5852528640, while the sum is 81.

The spelling of 870615228678669 in words is "eight hundred seventy trillion, six hundred fifteen billion, two hundred twenty-eight million, six hundred seventy-eight thousand, six hundred sixty-nine".