87168447 has 16 divisors (see below), whose sum is σ = 135936000. Its totient is φ = 55053432.

The previous prime is 87168437. The next prime is 87168449. The reversal of 87168447 is 74486178.

It is not a de Polignac number, because 87168447 - 2¹⁴ = 87152063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87168449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84447 + ... + 85472.

It is an arithmetic number, because the mean of its divisors is an integer number (8496000).

Almost surely, 2^87168447 is an apocalyptic number.

87168447 is a deficient number, since it is larger than the sum of its proper divisors (48767553).

87168447 is a wasteful number, since it uses less digits than its factorization.

87168447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169947 (or 169941 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 87168447 is about 9336.4043935554. The cubic root of 87168447 is about 443.3905535405.

The spelling of 87168447 in words is "eighty-seven million, one hundred sixty-eight thousand, four hundred forty-seven".