87219675 has 36 divisors (see below), whose sum is σ = 161619120. Its totient is φ = 44909760.

The previous prime is 87219631. The next prime is 87219677. The reversal of 87219675 is 57691278.

87219675 = T₂₆₂₉ + T₂₆₃₀ + ... + T₂₆₅₃.

It is not a de Polignac number, because 87219675 - 2⁷ = 87219547 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 87219675.

It is not an unprimeable number, because it can be changed into a prime (87219677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 159 + ... + 13208.

It is an arithmetic number, because the mean of its divisors is an integer number (4489420).

Almost surely, 2^87219675 is an apocalyptic number.

87219675 is a deficient number, since it is larger than the sum of its proper divisors (74399445).

87219675 is a wasteful number, since it uses less digits than its factorization.

87219675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13412 (or 13404 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 87219675 is about 9339.1474450294. The cubic root of 87219675 is about 443.4773952205.

The spelling of 87219675 in words is "eighty-seven million, two hundred nineteen thousand, six hundred seventy-five".