87788371 has 4 divisors (see below), whose sum is σ = 95769144. Its totient is φ = 79807600.

The previous prime is 87788359. The next prime is 87788387. The reversal of 87788371 is 17388778.

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 87788371 - 2⁷ = 87788243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87782371) 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, 3990370 + ... + 3990391.

It is an arithmetic number, because the mean of its divisors is an integer number (23942286).

Almost surely, 2^87788371 is an apocalyptic number.

87788371 is a deficient number, since it is larger than the sum of its proper divisors (7980773).

87788371 is a wasteful number, since it uses less digits than its factorization.

87788371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7980772.

The product of its digits is 526848, while the sum is 49.

The square root of 87788371 is about 9369.5448662142. The cubic root of 87788371 is about 444.4391722963.

The spelling of 87788371 in words is "eighty-seven million, seven hundred eighty-eight thousand, three hundred seventy-one".