87966897 has 4 divisors (see below), whose sum is σ = 117289200. Its totient is φ = 58644596.

The previous prime is 87966887. The next prime is 87966911. The reversal of 87966897 is 79866978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87966897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87966897.

It is not an unprimeable number, because it can be changed into a prime (87966887) 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 3 ways as a sum of consecutive naturals, for example, 14661147 + ... + 14661152.

It is an arithmetic number, because the mean of its divisors is an integer number (29322300).

Almost surely, 2^87966897 is an apocalyptic number.

It is an amenable number.

87966897 is a deficient number, since it is larger than the sum of its proper divisors (29322303).

87966897 is a wasteful number, since it uses less digits than its factorization.

87966897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29322302.

The product of its digits is 9144576, while the sum is 60.

The square root of 87966897 is about 9379.0669578589. The cubic root of 87966897 is about 444.7402380789.

It can be divided in two parts, 879 and 66897, that added together give a palindrome (67776).

The spelling of 87966897 in words is "eighty-seven million, nine hundred sixty-six thousand, eight hundred ninety-seven".