87897081 has 16 divisors (see below), whose sum is σ = 118683648. Its totient is φ = 57859200.

The previous prime is 87897049. The next prime is 87897091. The reversal of 87897081 is 18079878.

It is not a de Polignac number, because 87897081 - 2⁵ = 87897049 is a prime.

It is a super-2 number, since 2×87897081² = 15451793696641122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87897081.

It is not an unprimeable number, because it can be changed into a prime (87897001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106651 + ... + 107471.

It is an arithmetic number, because the mean of its divisors is an integer number (7417728).

Almost surely, 2^87897081 is an apocalyptic number.

It is an amenable number.

87897081 is a deficient number, since it is larger than the sum of its proper divisors (30786567).

87897081 is a wasteful number, since it uses less digits than its factorization.

87897081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 87897081 is about 9375.3443136772. The cubic root of 87897081 is about 444.6225491014.

The spelling of 87897081 in words is "eighty-seven million, eight hundred ninety-seven thousand, eighty-one".