1606556 has 24 divisors (see below), whose sum is σ = 3241056. Its totient is φ = 682560.

The previous prime is 1606547. The next prime is 1606559. The reversal of 1606556 is 6556061.

It is a super-2 number, since 2×1606556² = 5162044362272, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4910 + ... + 5226.

It is an arithmetic number, because the mean of its divisors is an integer number (135044).

2^1606556 is an apocalyptic number.

It is a pronic number, being equal to 1267×1268.

It is an amenable number.

1606556 is an abundant number, since it is smaller than the sum of its proper divisors (1634500).

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

1606556 is a wasteful number, since it uses less digits than its factorization.

1606556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1606556 is about 1267.4999013807. The cubic root of 1606556 is about 117.1202406693.

The spelling of 1606556 in words is "one million, six hundred six thousand, five hundred fifty-six".