87822665 has 8 divisors (see below), whose sum is σ = 120442560. Its totient is φ = 60221232.

The previous prime is 87822653. The next prime is 87822667. The reversal of 87822665 is 56622878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87822665 - 2⁶ = 87822601 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87822667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254575 + ... + 1254644.

It is an arithmetic number, because the mean of its divisors is an integer number (15055320).

Almost surely, 2^87822665 is an apocalyptic number.

It is an amenable number.

87822665 is a deficient number, since it is larger than the sum of its proper divisors (32619895).

87822665 is a wasteful number, since it uses less digits than its factorization.

87822665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509231.

The product of its digits is 322560, while the sum is 44.

The square root of 87822665 is about 9371.3747657428. The cubic root of 87822665 is about 444.4970372600.

The spelling of 87822665 in words is "eighty-seven million, eight hundred twenty-two thousand, six hundred sixty-five".