87616089 has 24 divisors (see below), whose sum is σ = 138999744. Its totient is φ = 52740000.

The previous prime is 87616073. The next prime is 87616091. The reversal of 87616089 is 98061678.

It is a happy number.

It is not a de Polignac number, because 87616089 - 2⁴ = 87616073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87616099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12019 + ... + 17879.

It is an arithmetic number, because the mean of its divisors is an integer number (5791656).

Almost surely, 2^87616089 is an apocalyptic number.

It is an amenable number.

87616089 is a deficient number, since it is larger than the sum of its proper divisors (51383655).

87616089 is a wasteful number, since it uses less digits than its factorization.

87616089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029 (or 6026 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 87616089 is about 9360.3466281971. The cubic root of 87616089 is about 444.1482491314.

The spelling of 87616089 in words is "eighty-seven million, six hundred sixteen thousand, eighty-nine".