86966969 has 6 divisors (see below), whose sum is σ = 90070110. Its totient is φ = 83967296.

The previous prime is 86966963. The next prime is 86966981. The reversal of 86966969 is 96966968.

It can be written as a sum of positive squares in 3 ways, for example, as 13213225 + 73753744 = 3635^2 + 8588^2 .

It is a de Polignac number, because none of the positive numbers 2^k-86966969 is a prime.

It is a super-2 number, since 2×86966969² = 15126507394093922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86966963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50864 + ... + 52545.

It is an arithmetic number, because the mean of its divisors is an integer number (15011685).

Almost surely, 2^86966969 is an apocalyptic number.

It is an amenable number.

86966969 is a deficient number, since it is larger than the sum of its proper divisors (3103141).

86966969 is a wasteful number, since it uses less digits than its factorization.

86966969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103467 (or 103438 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 59.

The square root of 86966969 is about 9325.6082375360. The cubic root of 86966969 is about 443.0486777016.

Subtracting 86966969 from its reverse (96966968), we obtain a palindrome (9999999).

The spelling of 86966969 in words is "eighty-six million, nine hundred sixty-six thousand, nine hundred sixty-nine".