6812491 has 4 divisors (see below), whose sum is σ = 7785712. Its totient is φ = 5839272.

The previous prime is 6812483. The next prime is 6812513. The reversal of 6812491 is 1942186.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1942186 = 2 ⋅971093.

It is a cyclic number.

It is not a de Polignac number, because 6812491 - 2³ = 6812483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6812401) 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, 486600 + ... + 486613.

It is an arithmetic number, because the mean of its divisors is an integer number (1946428).

Almost surely, 2^6812491 is an apocalyptic number.

6812491 is a deficient number, since it is larger than the sum of its proper divisors (973221).

6812491 is an equidigital number, since it uses as much as digits as its factorization.

6812491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973220.

The product of its digits is 3456, while the sum is 31.

The square root of 6812491 is about 2610.0749031398. The cubic root of 6812491 is about 189.5695796916.

The spelling of 6812491 in words is "six million, eight hundred twelve thousand, four hundred ninety-one".