1622556 has 36 divisors (see below), whose sum is σ = 4418232. Its totient is φ = 499104.

The previous prime is 1622549. The next prime is 1622557. The reversal of 1622556 is 6552261.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1266 + ... + 2201.

2^1622556 is an apocalyptic number.

It is an amenable number.

1622556 is an abundant number, since it is smaller than the sum of its proper divisors (2795676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1622556 is a wasteful number, since it uses less digits than its factorization.

1622556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3485 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1622556 is about 1273.7959020188. The cubic root of 1622556 is about 117.5077646898.

It can be divided in two parts, 162255 and 6, that added together give a palindrome (162261).

The spelling of 1622556 in words is "one million, six hundred twenty-two thousand, five hundred fifty-six".