8671387 has 4 divisors (see below), whose sum is σ = 8752536. Its totient is φ = 8590240.

The previous prime is 8671381. The next prime is 8671393. The reversal of 8671387 is 7831768.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8671381) and next prime (8671393).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8671387 is a prime.

It is a Duffinian number.

8671387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8671381) 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, 40414 + ... + 40627.

It is an arithmetic number, because the mean of its divisors is an integer number (2188134).

Almost surely, 2^8671387 is an apocalyptic number.

8671387 is a deficient number, since it is larger than the sum of its proper divisors (81149).

8671387 is a wasteful number, since it uses less digits than its factorization.

8671387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81148.

The product of its digits is 56448, while the sum is 40.

The square root of 8671387 is about 2944.7218883963. The cubic root of 8671387 is about 205.4452902432.

The spelling of 8671387 in words is "eight million, six hundred seventy-one thousand, three hundred eighty-seven".