6801539 has 4 divisors (see below), whose sum is σ = 6812520. Its totient is φ = 6790560.

The previous prime is 6801523. The next prime is 6801541. The reversal of 6801539 is 9351086.

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 6801539 - 2⁴ = 6801523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6801559) 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, 4502 + ... + 5819.

It is an arithmetic number, because the mean of its divisors is an integer number (1703130).

Almost surely, 2^6801539 is an apocalyptic number.

6801539 is a deficient number, since it is larger than the sum of its proper divisors (10981).

6801539 is a wasteful number, since it uses less digits than its factorization.

6801539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 6801539 is about 2607.9760351660. The cubic root of 6801539 is about 189.4679389651.

The spelling of 6801539 in words is "six million, eight hundred one thousand, five hundred thirty-nine".