87447671 has 4 divisors (see below), whose sum is σ = 92050200. Its totient is φ = 82845144.

The previous prime is 87447667. The next prime is 87447739. The reversal of 87447671 is 17674478.

It is a happy number.

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 87447671 - 2² = 87447667 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 (87447611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301236 + ... + 2301273.

It is an arithmetic number, because the mean of its divisors is an integer number (23012550).

Almost surely, 2^87447671 is an apocalyptic number.

87447671 is a deficient number, since it is larger than the sum of its proper divisors (4602529).

87447671 is a wasteful number, since it uses less digits than its factorization.

87447671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602528.

The product of its digits is 263424, while the sum is 44.

The square root of 87447671 is about 9351.3459459053. The cubic root of 87447671 is about 443.8634820257.

The spelling of 87447671 in words is "eighty-seven million, four hundred forty-seven thousand, six hundred seventy-one".