87427247 has 4 divisors (see below), whose sum is σ = 88056360. Its totient is φ = 86798136.

The previous prime is 87427237. The next prime is 87427273. The reversal of 87427247 is 74272478.

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 87427247 - 2⁶ = 87427183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87427237) 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 3 ways as a sum of consecutive naturals, for example, 314348 + ... + 314625.

It is an arithmetic number, because the mean of its divisors is an integer number (22014090).

Almost surely, 2^87427247 is an apocalyptic number.

87427247 is a deficient number, since it is larger than the sum of its proper divisors (629113).

87427247 is a wasteful number, since it uses less digits than its factorization.

87427247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629112.

The product of its digits is 175616, while the sum is 41.

The square root of 87427247 is about 9350.2538468215. The cubic root of 87427247 is about 443.8289235539.

The spelling of 87427247 in words is "eighty-seven million, four hundred twenty-seven thousand, two hundred forty-seven".