87655279 has 4 divisors (see below), whose sum is σ = 88048576. Its totient is φ = 87261984.

The previous prime is 87655241. The next prime is 87655289. The reversal of 87655279 is 97255678.

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 87655279 - 2⁹ = 87654767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87655289) 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, 196314 + ... + 196759.

It is an arithmetic number, because the mean of its divisors is an integer number (22012144).

Almost surely, 2^87655279 is an apocalyptic number.

87655279 is a deficient number, since it is larger than the sum of its proper divisors (393297).

87655279 is a wasteful number, since it uses less digits than its factorization.

87655279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393296.

The product of its digits is 1058400, while the sum is 49.

The square root of 87655279 is about 9362.4397995394. The cubic root of 87655279 is about 444.2144606211.

The spelling of 87655279 in words is "eighty-seven million, six hundred fifty-five thousand, two hundred seventy-nine".