6801149 has 4 divisors (see below), whose sum is σ = 6840636. Its totient is φ = 6761664.

The previous prime is 6801143. The next prime is 6801187. The reversal of 6801149 is 9411086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9411086 = 2 ⋅4705543.

It can be written as a sum of positive squares in 2 ways, for example, as 5373124 + 1428025 = 2318^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 6801149 - 2¹⁶ = 6735613 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801143) 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, 19484 + ... + 19829.

It is an arithmetic number, because the mean of its divisors is an integer number (1710159).

Almost surely, 2^6801149 is an apocalyptic number.

It is an amenable number.

6801149 is a deficient number, since it is larger than the sum of its proper divisors (39487).

6801149 is a wasteful number, since it uses less digits than its factorization.

6801149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39486.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 6801149 is about 2607.9012634684. The cubic root of 6801149 is about 189.4643175343.

The spelling of 6801149 in words is "six million, eight hundred one thousand, one hundred forty-nine".