87725576 has 16 divisors (see below), whose sum is σ = 174161340. Its totient is φ = 41282560.

The previous prime is 87725569. The next prime is 87725581. The reversal of 87725576 is 67552778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70997476 + 16728100 = 8426^2 + 4090^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87725576.

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, 322385 + ... + 322656.

Almost surely, 2^87725576 is an apocalyptic number.

It is an amenable number.

87725576 is a deficient number, since it is larger than the sum of its proper divisors (86435764).

87725576 is a wasteful number, since it uses less digits than its factorization.

87725576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645064 (or 645060 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 87725576 is about 9366.1932501951. The cubic root of 87725576 is about 444.3331779431. Note that the first 3 decimals are identical.

The spelling of 87725576 in words is "eighty-seven million, seven hundred twenty-five thousand, five hundred seventy-six".