6481447 has 4 divisors (see below), whose sum is σ = 7407376. Its totient is φ = 5555520.

The previous prime is 6481439. The next prime is 6481457. The reversal of 6481447 is 7441846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7441846 = 2 ⋅3720923.

It is a cyclic number.

It is not a de Polignac number, because 6481447 - 2³ = 6481439 is a prime.

It is a Duffinian number.

6481447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481417) 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, 462954 + ... + 462967.

It is an arithmetic number, because the mean of its divisors is an integer number (1851844).

Almost surely, 2^6481447 is an apocalyptic number.

6481447 is a deficient number, since it is larger than the sum of its proper divisors (925929).

6481447 is an equidigital number, since it uses as much as digits as its factorization.

6481447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925928.

The product of its digits is 21504, while the sum is 34.

The square root of 6481447 is about 2545.8686140490. The cubic root of 6481447 is about 186.4478263782.

The spelling of 6481447 in words is "six million, four hundred eighty-one thousand, four hundred forty-seven".