1606222 has 16 divisors (see below), whose sum is σ = 2597760. Its totient is φ = 742392.

The previous prime is 1606201. The next prime is 1606237. The reversal of 1606222 is 2226061.

It is a super-2 number, since 2×1606222² = 5159898226568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1606222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (162360).

2^1606222 is an apocalyptic number.

1606222 is a deficient number, since it is larger than the sum of its proper divisors (991538).

1606222 is a wasteful number, since it uses less digits than its factorization.

1606222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1606222 is about 1267.3681390977. The cubic root of 1606222 is about 117.1121237468.

The spelling of 1606222 in words is "one million, six hundred six thousand, two hundred twenty-two".