87908636 has 6 divisors (see below), whose sum is σ = 153840120. Its totient is φ = 43954316.

The previous prime is 87908629. The next prime is 87908651. The reversal of 87908636 is 63680978.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10988576 + ... + 10988583.

It is an arithmetic number, because the mean of its divisors is an integer number (25640020).

Almost surely, 2^87908636 is an apocalyptic number.

It is an amenable number.

87908636 is a deficient number, since it is larger than the sum of its proper divisors (65931484).

87908636 is a wasteful number, since it uses less digits than its factorization.

87908636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21977163 (or 21977161 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 87908636 is about 9375.9605374596. The cubic root of 87908636 is about 444.6420316917.

The spelling of 87908636 in words is "eighty-seven million, nine hundred eight thousand, six hundred thirty-six".