6478249 has 4 divisors (see below), whose sum is σ = 6759936. Its totient is φ = 6196564.

The previous prime is 6478229. The next prime is 6478267. The reversal of 6478249 is 9428746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6478249 - 2¹⁷ = 6347177 is a prime.

It is a Duffinian number.

6478249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6478229) 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, 140809 + ... + 140854.

It is an arithmetic number, because the mean of its divisors is an integer number (1689984).

Almost surely, 2^6478249 is an apocalyptic number.

It is an amenable number.

6478249 is a deficient number, since it is larger than the sum of its proper divisors (281687).

6478249 is a wasteful number, since it uses less digits than its factorization.

6478249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281686.

The product of its digits is 96768, while the sum is 40.

The square root of 6478249 is about 2545.2404601530. The cubic root of 6478249 is about 186.4171563626.

The spelling of 6478249 in words is "six million, four hundred seventy-eight thousand, two hundred forty-nine".