87636916 has 6 divisors (see below), whose sum is σ = 153364610. Its totient is φ = 43818456.

The previous prime is 87636851. The next prime is 87636919. The reversal of 87636916 is 61963678.

It can be written as a sum of positive squares in only one way, i.e., 76387600 + 11249316 = 8740^2 + 3354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87636919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10954611 + ... + 10954618.

Almost surely, 2^87636916 is an apocalyptic number.

It is an amenable number.

87636916 is a deficient number, since it is larger than the sum of its proper divisors (65727694).

87636916 is a wasteful number, since it uses less digits than its factorization.

87636916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21909233 (or 21909231 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 87636916 is about 9361.4590743110. The cubic root of 87636916 is about 444.1834387974.

The spelling of 87636916 in words is "eighty-seven million, six hundred thirty-six thousand, nine hundred sixteen".