87712777 has 4 divisors (see below), whose sum is σ = 91526400. Its totient is φ = 83899156.

The previous prime is 87712727. The next prime is 87712787. The reversal of 87712777 is 77721778.

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 not a de Polignac number, because 87712777 - 2¹¹ = 87710729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87712727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906777 + ... + 1906822.

It is an arithmetic number, because the mean of its divisors is an integer number (22881600).

Almost surely, 2^87712777 is an apocalyptic number.

It is an amenable number.

87712777 is a deficient number, since it is larger than the sum of its proper divisors (3813623).

87712777 is a wasteful number, since it uses less digits than its factorization.

87712777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813622.

The product of its digits is 268912, while the sum is 46.

The square root of 87712777 is about 9365.5099700977. The cubic root of 87712777 is about 444.3115677613.

Subtracting from 87712777 its reverse (77721778), we obtain a palindrome (9990999).

The spelling of 87712777 in words is "eighty-seven million, seven hundred twelve thousand, seven hundred seventy-seven".