86897679869 has 32 divisors (see below), whose sum is σ = 118586576640. Its totient is φ = 61479129600.

The previous prime is 86897679857. The next prime is 86897679871. The reversal of 86897679869 is 96897679868.

It is not a de Polignac number, because 86897679869 - 2¹² = 86897675773 is a prime.

It is a super-2 number, since 2×86897679869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86897679809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650504 + ... + 772625.

It is an arithmetic number, because the mean of its divisors is an integer number (3705830520).

Almost surely, 2^86897679869 is an apocalyptic number.

It is an amenable number.

86897679869 is a deficient number, since it is larger than the sum of its proper divisors (31688896771).

86897679869 is a wasteful number, since it uses less digits than its factorization.

86897679869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423221.

The product of its digits is 3950456832, while the sum is 83.

Subtracting 86897679869 from its reverse (96897679868), we obtain a palindrome (9999999999).

The spelling of 86897679869 in words is "eighty-six billion, eight hundred ninety-seven million, six hundred seventy-nine thousand, eight hundred sixty-nine".