87668911 has 4 divisors (see below), whose sum is σ = 95638824. Its totient is φ = 79699000.

The previous prime is 87668887. The next prime is 87668923. The reversal of 87668911 is 11986678.

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

It is a cyclic number.

It is not a de Polignac number, because 87668911 - 2⁵ = 87668879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87668951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3984940 + ... + 3984961.

It is an arithmetic number, because the mean of its divisors is an integer number (23909706).

Almost surely, 2^87668911 is an apocalyptic number.

87668911 is a deficient number, since it is larger than the sum of its proper divisors (7969913).

87668911 is a wasteful number, since it uses less digits than its factorization.

87668911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969912.

The product of its digits is 145152, while the sum is 46.

The square root of 87668911 is about 9363.1677865987. The cubic root of 87668911 is about 444.2374872534.

The spelling of 87668911 in words is "eighty-seven million, six hundred sixty-eight thousand, nine hundred eleven".