87875613 has 24 divisors (see below), whose sum is σ = 145454400. Its totient is φ = 50079744.

The previous prime is 87875611. The next prime is 87875621. The reversal of 87875613 is 31657878.

87875613 is a `hidden beast` number, since 8 + 7 + 87 + 561 + 3 = 666.

It is not a de Polignac number, because 87875613 - 2¹ = 87875611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87875611) 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 23 ways as a sum of consecutive naturals, for example, 24733 + ... + 28061.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600).

Almost surely, 2^87875613 is an apocalyptic number.

It is an amenable number.

87875613 is a deficient number, since it is larger than the sum of its proper divisors (57578787).

87875613 is a wasteful number, since it uses less digits than its factorization.

87875613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761 (or 3758 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 87875613 is about 9374.1993258091. The cubic root of 87875613 is about 444.5863479216.

It can be divided in two parts, 87875 and 613, that added together give a palindrome (88488).

The spelling of 87875613 in words is "eighty-seven million, eight hundred seventy-five thousand, six hundred thirteen".