1656022 has 4 divisors (see below), whose sum is σ = 2484036. Its totient is φ = 828010.

The previous prime is 1656019. The next prime is 1656043. The reversal of 1656022 is 2206561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2206561 = 7 ⋅315223.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1655984 and 1656002.

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, 414004 + ... + 414007.

It is an arithmetic number, because the mean of its divisors is an integer number (621009).

2^1656022 is an apocalyptic number.

1656022 is a deficient number, since it is larger than the sum of its proper divisors (828014).

1656022 is an equidigital number, since it uses as much as digits as its factorization.

1656022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828013.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1656022 is about 1286.8651833040. The cubic root of 1656022 is about 118.3101579071.

The spelling of 1656022 in words is "one million, six hundred fifty-six thousand, twenty-two".