8672181 has 16 divisors (see below), whose sum is σ = 13398144. Its totient is φ = 4886784.

The previous prime is 8672177. The next prime is 8672201. The reversal of 8672181 is 1812768.

It is a happy number.

It is not a de Polignac number, because 8672181 - 2² = 8672177 is a prime.

It is a super-2 number, since 2×8672181² = 150413446593522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8672101) 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 15 ways as a sum of consecutive naturals, for example, 1296 + ... + 4361.

It is an arithmetic number, because the mean of its divisors is an integer number (837384).

Almost surely, 2^8672181 is an apocalyptic number.

It is an amenable number.

8672181 is a deficient number, since it is larger than the sum of its proper divisors (4725963).

8672181 is a wasteful number, since it uses less digits than its factorization.

8672181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740.

The product of its digits is 5376, while the sum is 33.

The square root of 8672181 is about 2944.8567027956. The cubic root of 8672181 is about 205.4515606197.

The spelling of 8672181 in words is "eight million, six hundred seventy-two thousand, one hundred eighty-one".