87695081 has 4 divisors (see below), whose sum is σ = 88599252. Its totient is φ = 86790912.

The previous prime is 87695077. The next prime is 87695093. The reversal of 87695081 is 18059678.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19219456 + 68475625 = 4384^2 + 8275^2 .

It is a cyclic number.

It is not a de Polignac number, because 87695081 - 2² = 87695077 is a prime.

It is a super-2 number, since 2×87695081² = 15380854463193122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87695281) 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, 451940 + ... + 452133.

It is an arithmetic number, because the mean of its divisors is an integer number (22149813).

Almost surely, 2^87695081 is an apocalyptic number.

It is an amenable number.

87695081 is a deficient number, since it is larger than the sum of its proper divisors (904171).

87695081 is an equidigital number, since it uses as much as digits as its factorization.

87695081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904170.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 87695081 is about 9364.5651794411. The cubic root of 87695081 is about 444.2816858878.

The spelling of 87695081 in words is "eighty-seven million, six hundred ninety-five thousand, eighty-one".