8978641 has 8 divisors (see below), whose sum is σ = 10353024. Its totient is φ = 7627200.

The previous prime is 8978639. The next prime is 8978663. The reversal of 8978641 is 1468798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8978641 - 2¹ = 8978639 is a prime.

It is a d-powerful number, because it can be written as 8⁷ + 9⁷ + 7 + 8⁷ + 6⁴ + 4³ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8975641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4885 + ... + 6466.

It is an arithmetic number, because the mean of its divisors is an integer number (1294128).

Almost surely, 2^8978641 is an apocalyptic number.

It is an amenable number.

8978641 is a deficient number, since it is larger than the sum of its proper divisors (1374383).

8978641 is a wasteful number, since it uses less digits than its factorization.

8978641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471.

The product of its digits is 96768, while the sum is 43.

The square root of 8978641 is about 2996.4380520878. The cubic root of 8978641 is about 207.8437019236.

The spelling of 8978641 in words is "eight million, nine hundred seventy-eight thousand, six hundred forty-one".