8156873 has 4 divisors (see below), whose sum is σ = 8164740. Its totient is φ = 8149008.

The previous prime is 8156867. The next prime is 8156893. The reversal of 8156873 is 3786518.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4108729 + 4048144 = 2027^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 8156873 - 2⁴ = 8156857 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8156893) 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, 2090 + ... + 4547.

It is an arithmetic number, because the mean of its divisors is an integer number (2041185).

Almost surely, 2^8156873 is an apocalyptic number.

It is an amenable number.

8156873 is a deficient number, since it is larger than the sum of its proper divisors (7867).

8156873 is a wasteful number, since it uses less digits than its factorization.

8156873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866.

The product of its digits is 40320, while the sum is 38.

The square root of 8156873 is about 2856.0239844931. The cubic root of 8156873 is about 201.2988220478.

The spelling of 8156873 in words is "eight million, one hundred fifty-six thousand, eight hundred seventy-three".