6872531 has 4 divisors (see below), whose sum is σ = 6881952. Its totient is φ = 6863112.

The previous prime is 6872521. The next prime is 6872581. The reversal of 6872531 is 1352786.

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 6872531 - 2¹⁰ = 6871507 is a prime.

It is a super-2 number, since 2×6872531² = 94463364691922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6872501) 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, 3515 + ... + 5108.

It is an arithmetic number, because the mean of its divisors is an integer number (1720488).

Almost surely, 2^6872531 is an apocalyptic number.

6872531 is a deficient number, since it is larger than the sum of its proper divisors (9421).

6872531 is an equidigital number, since it uses as much as digits as its factorization.

6872531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9420.

The product of its digits is 10080, while the sum is 32.

The square root of 6872531 is about 2621.5512583202. The cubic root of 6872531 is about 190.1248579136.

The spelling of 6872531 in words is "six million, eight hundred seventy-two thousand, five hundred thirty-one".