87680887 has 4 divisors (see below), whose sum is σ = 100206736. Its totient is φ = 75155040.

The previous prime is 87680869. The next prime is 87680893. The reversal of 87680887 is 78808678.

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 87680887 - 2¹⁹ = 87156599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87680587) 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, 6262914 + ... + 6262927.

It is an arithmetic number, because the mean of its divisors is an integer number (25051684).

Almost surely, 2^87680887 is an apocalyptic number.

87680887 is a deficient number, since it is larger than the sum of its proper divisors (12525849).

87680887 is a wasteful number, since it uses less digits than its factorization.

87680887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12525848.

The product of its (nonzero) digits is 1204224, while the sum is 52.

The square root of 87680887 is about 9363.8072919086. The cubic root of 87680887 is about 444.2577146668.

The spelling of 87680887 in words is "eighty-seven million, six hundred eighty thousand, eight hundred eighty-seven".