8278641 has 24 divisors (see below), whose sum is σ = 13742144. Its totient is φ = 4704480.

The previous prime is 8278637. The next prime is 8278649. The reversal of 8278641 is 1468728.

8278641 is a `hidden beast` number, since 8 + 2 + 7 + 8 + 641 = 666.

It is not a de Polignac number, because 8278641 - 2² = 8278637 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8278596 and 8278605.

It is not an unprimeable number, because it can be changed into a prime (8278649) 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 in 23 ways as a sum of consecutive naturals, for example, 20655 + ... + 21051.

Almost surely, 2^8278641 is an apocalyptic number.

It is an amenable number.

8278641 is a deficient number, since it is larger than the sum of its proper divisors (5463503).

8278641 is a wasteful number, since it uses less digits than its factorization.

8278641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 738 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 8278641 is about 2877.2627617234. The cubic root of 8278641 is about 202.2955595593.

The spelling of 8278641 in words is "eight million, two hundred seventy-eight thousand, six hundred forty-one".