4978647 has 12 divisors (see below), whose sum is σ = 7210944. Its totient is φ = 3310080.

The previous prime is 4978607. The next prime is 4978651. The reversal of 4978647 is 7468794.

It is not a de Polignac number, because 4978647 - 2¹⁵ = 4945879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5338 + ... + 6200.

It is an arithmetic number, because the mean of its divisors is an integer number (600912).

Almost surely, 2^4978647 is an apocalyptic number.

4978647 is a deficient number, since it is larger than the sum of its proper divisors (2232297).

4978647 is a wasteful number, since it uses less digits than its factorization.

4978647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1507 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 4978647 is about 2231.2881929504. The cubic root of 4978647 is about 170.7538265497.

It can be divided in two parts, 4978 and 647, that added together give a square (5625 = 75²).

The spelling of 4978647 in words is "four million, nine hundred seventy-eight thousand, six hundred forty-seven".