67987671 has 8 divisors (see below), whose sum is σ = 90757104. Its totient is φ = 45271680.

The previous prime is 67987649. The next prime is 67987679. The reversal of 67987671 is 17678976.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67987671 - 2²¹ = 65890519 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67987679) 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 7 ways as a sum of consecutive naturals, for example, 10290 + ... + 15551.

It is an arithmetic number, because the mean of its divisors is an integer number (11344638).

Almost surely, 2^67987671 is an apocalyptic number.

67987671 is a deficient number, since it is larger than the sum of its proper divisors (22769433).

67987671 is a wasteful number, since it uses less digits than its factorization.

67987671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26721.

The product of its digits is 889056, while the sum is 51.

The square root of 67987671 is about 8245.4636619174. The cubic root of 67987671 is about 408.1408406979.

The spelling of 67987671 in words is "sixty-seven million, nine hundred eighty-seven thousand, six hundred seventy-one".