87765411 has 4 divisors (see below), whose sum is σ = 117020552. Its totient is φ = 58510272.

The previous prime is 87765299. The next prime is 87765421. The reversal of 87765411 is 11456778.

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

It is not a de Polignac number, because 87765411 - 2⁷ = 87765283 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87765411.

It is not an unprimeable number, because it can be changed into a prime (87765421) 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, 14627566 + ... + 14627571.

It is an arithmetic number, because the mean of its divisors is an integer number (29255138).

Almost surely, 2^87765411 is an apocalyptic number.

87765411 is a deficient number, since it is larger than the sum of its proper divisors (29255141).

87765411 is a wasteful number, since it uses less digits than its factorization.

87765411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29255140.

The product of its digits is 47040, while the sum is 39.

The square root of 87765411 is about 9368.3195398108. The cubic root of 87765411 is about 444.4004229987.

The spelling of 87765411 in words is "eighty-seven million, seven hundred sixty-five thousand, four hundred eleven".