6478747 has 4 divisors (see below), whose sum is σ = 7067736. Its totient is φ = 5889760.

The previous prime is 6478733. The next prime is 6478757. The reversal of 6478747 is 7478746.

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 6478747 - 2¹¹ = 6476699 is a prime.

It is a Duffinian number.

6478747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6478757) 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, 294478 + ... + 294499.

It is an arithmetic number, because the mean of its divisors is an integer number (1766934).

Almost surely, 2^6478747 is an apocalyptic number.

6478747 is a deficient number, since it is larger than the sum of its proper divisors (588989).

6478747 is a wasteful number, since it uses less digits than its factorization.

6478747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588988.

The product of its digits is 263424, while the sum is 43.

The square root of 6478747 is about 2545.3382879295. The cubic root of 6478747 is about 186.4219330322.

Subtracting 6478747 from its reverse (7478746), we obtain a palindrome (999999).

It can be divided in two parts, 6478 and 747, that added together give a square (7225 = 85²).

The spelling of 6478747 in words is "six million, four hundred seventy-eight thousand, seven hundred forty-seven".