87657475677 has 4 divisors (see below), whose sum is σ = 116876634240. Its totient is φ = 58438317116.

The previous prime is 87657475627. The next prime is 87657475679. The reversal of 87657475677 is 77657475678.

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 87657475677 - 2⁶ = 87657475613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87657475679) 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, 14609579277 + ... + 14609579282.

It is an arithmetic number, because the mean of its divisors is an integer number (29219158560).

Almost surely, 2^87657475677 is an apocalyptic number.

It is an amenable number.

87657475677 is a deficient number, since it is larger than the sum of its proper divisors (29219158563).

87657475677 is a wasteful number, since it uses less digits than its factorization.

87657475677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29219158562.

The product of its digits is 484041600, while the sum is 69.

Subtracting from 87657475677 its reverse (77657475678), we obtain a palindrome (9999999999).

The spelling of 87657475677 in words is "eighty-seven billion, six hundred fifty-seven million, four hundred seventy-five thousand, six hundred seventy-seven".