8561478 has 8 divisors (see below), whose sum is σ = 17122968. Its totient is φ = 2853824.

The previous prime is 8561477. The next prime is 8561479. The reversal of 8561478 is 8741658.

It is an interprime number because it is at equal distance from previous prime (8561477) and next prime (8561479).

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

8561478 is an admirable number.

It is a super-3 number, since 3×8561478³ (a number of 22 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8561471) 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, 713451 + ... + 713462.

It is an arithmetic number, because the mean of its divisors is an integer number (2140371).

Almost surely, 2^8561478 is an apocalyptic number.

8561478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8561478 is a wasteful number, since it uses less digits than its factorization.

8561478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426918.

The product of its digits is 53760, while the sum is 39.

The square root of 8561478 is about 2926.0003417635. Note that the first 3 decimals coincide. The cubic root of 8561478 is about 204.5735971334.

The spelling of 8561478 in words is "eight million, five hundred sixty-one thousand, four hundred seventy-eight".