87947667 has 16 divisors (see below), whose sum is σ = 130788000. Its totient is φ = 58408992.

The previous prime is 87947659. The next prime is 87947677. The reversal of 87947667 is 76674978.

It is not a de Polignac number, because 87947667 - 2³ = 87947659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87947677) 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 15 ways as a sum of consecutive naturals, for example, 1209 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (8174250).

Almost surely, 2^87947667 is an apocalyptic number.

87947667 is a deficient number, since it is larger than the sum of its proper divisors (42840333).

87947667 is a wasteful number, since it uses less digits than its factorization.

87947667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12387 (or 12381 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 87947667 is about 9378.0417465482. The cubic root of 87947667 is about 444.7078282432.

It can be divided in two parts, 8794 and 7667, that added together give a palindrome (16461).

The spelling of 87947667 in words is "eighty-seven million, nine hundred forty-seven thousand, six hundred sixty-seven".