87214147 has 4 divisors (see below), whose sum is σ = 87258960. Its totient is φ = 87169336.

The previous prime is 87214111. The next prime is 87214157. The reversal of 87214147 is 74141278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87214147 - 2¹⁵ = 87181379 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87214157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19348 + ... + 23425.

It is an arithmetic number, because the mean of its divisors is an integer number (21814740).

Almost surely, 2^87214147 is an apocalyptic number.

87214147 is a deficient number, since it is larger than the sum of its proper divisors (44813).

87214147 is a wasteful number, since it uses less digits than its factorization.

87214147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44812.

The product of its digits is 12544, while the sum is 34.

The square root of 87214147 is about 9338.8514818472. The cubic root of 87214147 is about 443.4680257946.

The spelling of 87214147 in words is "eighty-seven million, two hundred fourteen thousand, one hundred forty-seven".