8746978 has 4 divisors (see below), whose sum is σ = 13120470. Its totient is φ = 4373488.

The previous prime is 8746967. The next prime is 8746979. The reversal of 8746978 is 8796478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8796478 = 2 ⋅4398239.

It can be written as a sum of positive squares in only one way, i.e., 5276209 + 3470769 = 2297^2 + 1863^2 .

It is not an unprimeable number, because it can be changed into a prime (8746979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2186743 + ... + 2186746.

Almost surely, 2^8746978 is an apocalyptic number.

8746978 is a deficient number, since it is larger than the sum of its proper divisors (4373492).

8746978 is a wasteful number, since it uses less digits than its factorization.

8746978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373491.

The product of its digits is 677376, while the sum is 49.

The square root of 8746978 is about 2957.5290362057. The cubic root of 8746978 is about 206.0405393556.

The spelling of 8746978 in words is "eight million, seven hundred forty-six thousand, nine hundred seventy-eight".