6402226 has 4 divisors (see below), whose sum is σ = 9603342. Its totient is φ = 3201112.

The previous prime is 6402203. The next prime is 6402247. The reversal of 6402226 is 6222046.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6222046 = 2 ⋅3111023.

It can be written as a sum of positive squares in only one way, i.e., 3515625 + 2886601 = 1875^2 + 1699^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6402197 and 6402206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600555 + ... + 1600558.

Almost surely, 2^6402226 is an apocalyptic number.

6402226 is a deficient number, since it is larger than the sum of its proper divisors (3201116).

6402226 is a wasteful number, since it uses less digits than its factorization.

6402226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201115.

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

The square root of 6402226 is about 2530.2620417656. The cubic root of 6402226 is about 185.6850762176.

The spelling of 6402226 in words is "six million, four hundred two thousand, two hundred twenty-six".