87705764 has 6 divisors (see below), whose sum is σ = 153485094. Its totient is φ = 43852880.

The previous prime is 87705757. The next prime is 87705791. The reversal of 87705764 is 46750778.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 9241600 = 8858^2 + 3040^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10963217 + ... + 10963224.

It is an arithmetic number, because the mean of its divisors is an integer number (25580849).

Almost surely, 2^87705764 is an apocalyptic number.

It is an amenable number.

87705764 is a deficient number, since it is larger than the sum of its proper divisors (65779330).

87705764 is a wasteful number, since it uses less digits than its factorization.

87705764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21926445 (or 21926443 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 87705764 is about 9365.1355569474. The cubic root of 87705764 is about 444.2997259287.

The spelling of 87705764 in words is "eighty-seven million, seven hundred five thousand, seven hundred sixty-four".