87531626 has 32 divisors (see below), whose sum is σ = 162196608. Its totient is φ = 34499520.

The previous prime is 87531611. The next prime is 87531649. The reversal of 87531626 is 62613578.

It is a self number, because there is not a number n which added to its sum of digits gives 87531626.

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 in 15 ways as a sum of consecutive naturals, for example, 59516 + ... + 60968.

It is an arithmetic number, because the mean of its divisors is an integer number (5068644).

Almost surely, 2^87531626 is an apocalyptic number.

87531626 is a deficient number, since it is larger than the sum of its proper divisors (74664982).

87531626 is a wasteful number, since it uses less digits than its factorization.

87531626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its digits is 60480, while the sum is 38.

The square root of 87531626 is about 9355.8337950180. The cubic root of 87531626 is about 444.0054817655.

The spelling of 87531626 in words is "eighty-seven million, five hundred thirty-one thousand, six hundred twenty-six".