6406222 has 4 divisors (see below), whose sum is σ = 9609336. Its totient is φ = 3203110.

The previous prime is 6406219. The next prime is 6406247. The reversal of 6406222 is 2226046.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6406193 and 6406202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601554 + ... + 1601557.

It is an arithmetic number, because the mean of its divisors is an integer number (2402334).

Almost surely, 2^6406222 is an apocalyptic number.

6406222 is a deficient number, since it is larger than the sum of its proper divisors (3203114).

6406222 is a wasteful number, since it uses less digits than its factorization.

6406222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203113.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 6406222 is about 2531.0515601228. The cubic root of 6406222 is about 185.7237004526.

The spelling of 6406222 in words is "six million, four hundred six thousand, two hundred twenty-two".