6422187 has 4 divisors (see below), whose sum is σ = 8562920. Its totient is φ = 4281456.

The previous prime is 6422183. The next prime is 6422189. The reversal of 6422187 is 7812246.

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

It is not a de Polignac number, because 6422187 - 2² = 6422183 is a prime.

It is a D-number.

It is a Duffinian number.

6422187 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6422183) 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, 1070362 + ... + 1070367.

It is an arithmetic number, because the mean of its divisors is an integer number (2140730).

Almost surely, 2^6422187 is an apocalyptic number.

6422187 is a deficient number, since it is larger than the sum of its proper divisors (2140733).

6422187 is a wasteful number, since it uses less digits than its factorization.

6422187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140732.

The product of its digits is 5376, while the sum is 30.

The square root of 6422187 is about 2534.2034251417. The cubic root of 6422187 is about 185.8778536692.

The spelling of 6422187 in words is "six million, four hundred twenty-two thousand, one hundred eighty-seven".