87048639 has 12 divisors (see below), whose sum is σ = 126034272. Its totient is φ = 57895200.

The previous prime is 87048601. The next prime is 87048649. The reversal of 87048639 is 93684078.

It is a happy number.

87048639 is a `hidden beast` number, since 8 + 7 + 0 + 4 + 8 + 639 = 666.

It is not a de Polignac number, because 87048639 - 2⁹ = 87048127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87048594 and 87048603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87048649) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7342 + ... + 15099.

It is an arithmetic number, because the mean of its divisors is an integer number (10502856).

Almost surely, 2^87048639 is an apocalyptic number.

87048639 is a deficient number, since it is larger than the sum of its proper divisors (38985633).

87048639 is a wasteful number, since it uses less digits than its factorization.

87048639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22878 (or 22875 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 87048639 is about 9329.9860128513. The cubic root of 87048639 is about 443.1873221594.

The spelling of 87048639 in words is "eighty-seven million, forty-eight thousand, six hundred thirty-nine".