87027721 has 8 divisors (see below), whose sum is σ = 95919264. Its totient is φ = 78299520.

The previous prime is 87027719. The next prime is 87027763. The reversal of 87027721 is 12772078.

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 87027721 - 2¹ = 87027719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87027821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39715 + ... + 41848.

It is an arithmetic number, because the mean of its divisors is an integer number (11989908).

Almost surely, 2^87027721 is an apocalyptic number.

It is an amenable number.

87027721 is a deficient number, since it is larger than the sum of its proper divisors (8891543).

87027721 is a wasteful number, since it uses less digits than its factorization.

87027721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81671.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 87027721 is about 9328.8649363146. The cubic root of 87027721 is about 443.1518196511.

Adding to 87027721 its reverse (12772078), we get a palindrome (99799799).

The spelling of 87027721 in words is "eighty-seven million, twenty-seven thousand, seven hundred twenty-one".