87019875 has 24 divisors (see below), whose sum is σ = 156869856. Its totient is φ = 46410000.

The previous prime is 87019873. The next prime is 87019901. The reversal of 87019875 is 57891078.

It is not a de Polignac number, because 87019875 - 2¹ = 87019873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87019875.

It is not an unprimeable number, because it can be changed into a prime (87019871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37551 + ... + 39800.

It is an arithmetic number, because the mean of its divisors is an integer number (6536244).

Almost surely, 2^87019875 is an apocalyptic number.

87019875 is a deficient number, since it is larger than the sum of its proper divisors (69849981).

87019875 is a wasteful number, since it uses less digits than its factorization.

87019875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77372 (or 77359 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 87019875 is about 9328.4444040794. Note that the first 4 decimals coincide. The cubic root of 87019875 is about 443.1385017732.

The spelling of 87019875 in words is "eighty-seven million, nineteen thousand, eight hundred seventy-five".