8672591 has 4 divisors (see below), whose sum is σ = 8952384. Its totient is φ = 8392800.

The previous prime is 8672563. The next prime is 8672597. The reversal of 8672591 is 1952768.

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 8672591 - 2⁶ = 8672527 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 (8672597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139850 + ... + 139911.

It is an arithmetic number, because the mean of its divisors is an integer number (2238096).

Almost surely, 2^8672591 is an apocalyptic number.

8672591 is a deficient number, since it is larger than the sum of its proper divisors (279793).

8672591 is a wasteful number, since it uses less digits than its factorization.

8672591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279792.

The product of its digits is 30240, while the sum is 38.

The square root of 8672591 is about 2944.9263148677. The cubic root of 8672591 is about 205.4547983216.

The spelling of 8672591 in words is "eight million, six hundred seventy-two thousand, five hundred ninety-one".