8642427 has 4 divisors (see below), whose sum is σ = 11523240. Its totient is φ = 5761616.

The previous prime is 8642383. The next prime is 8642429. The reversal of 8642427 is 7242468.

8642427 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8642427 - 2¹⁴ = 8626043 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8642429) 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, 1440402 + ... + 1440407.

It is an arithmetic number, because the mean of its divisors is an integer number (2880810).

Almost surely, 2^8642427 is an apocalyptic number.

8642427 is a deficient number, since it is larger than the sum of its proper divisors (2880813).

8642427 is a wasteful number, since it uses less digits than its factorization.

8642427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880812.

The product of its digits is 21504, while the sum is 33.

The square root of 8642427 is about 2939.8005034356. The cubic root of 8642427 is about 205.2163252822.

The spelling of 8642427 in words is "eight million, six hundred forty-two thousand, four hundred twenty-seven".