87709605 has 32 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 44154432.

The previous prime is 87709591. The next prime is 87709627. The reversal of 87709605 is 50690778.

It is not a de Polignac number, because 87709605 - 2⁹ = 87709093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132766 + ... + 133424.

It is an arithmetic number, because the mean of its divisors is an integer number (4633200).

Almost surely, 2^87709605 is an apocalyptic number.

It is an amenable number.

87709605 is a deficient number, since it is larger than the sum of its proper divisors (60552795).

87709605 is a wasteful number, since it uses less digits than its factorization.

87709605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 87709605 is about 9365.3406238108. The cubic root of 87709605 is about 444.3062117446.

The spelling of 87709605 in words is "eighty-seven million, seven hundred nine thousand, six hundred five".