6484639 has 4 divisors (see below), whose sum is σ = 7411024. Its totient is φ = 5558256.

The previous prime is 6484627. The next prime is 6484651. The reversal of 6484639 is 9364846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9364846 = 2 ⋅4682423.

It is an interprime number because it is at equal distance from previous prime (6484627) and next prime (6484651).

It is a cyclic number.

It is not a de Polignac number, because 6484639 - 2¹³ = 6476447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6484609) 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, 463182 + ... + 463195.

It is an arithmetic number, because the mean of its divisors is an integer number (1852756).

Almost surely, 2^6484639 is an apocalyptic number.

6484639 is a deficient number, since it is larger than the sum of its proper divisors (926385).

6484639 is an equidigital number, since it uses as much as digits as its factorization.

6484639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926384.

The product of its digits is 124416, while the sum is 40.

The square root of 6484639 is about 2546.4954349066. The cubic root of 6484639 is about 186.4784287931.

The spelling of 6484639 in words is "six million, four hundred eighty-four thousand, six hundred thirty-nine".