87663776 has 24 divisors (see below), whose sum is σ = 173697300. Its totient is φ = 43550208.

The previous prime is 87663761. The next prime is 87663791. The reversal of 87663776 is 67736678.

It is an interprime number because it is at equal distance from previous prime (87663761) and next prime (87663791).

It can be written as a sum of positive squares in 2 ways, for example, as 82373776 + 5290000 = 9076^2 + 2300^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 3701 + ... + 13748.

Almost surely, 2^87663776 is an apocalyptic number.

It is an amenable number.

87663776 is a deficient number, since it is larger than the sum of its proper divisors (86033524).

87663776 is a wasteful number, since it uses less digits than its factorization.

87663776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17616 (or 17608 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 50.

The square root of 87663776 is about 9362.8935698319. The cubic root of 87663776 is about 444.2288136958.

The spelling of 87663776 in words is "eighty-seven million, six hundred sixty-three thousand, seven hundred seventy-six".