1606980 has 24 divisors (see below), whose sum is σ = 4499712. Its totient is φ = 428512.

The previous prime is 1606967. The next prime is 1606981. The reversal of 1606980 is 896061.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1606981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13332 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (187488).

2^1606980 is an apocalyptic number.

1606980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606980 is an abundant number, since it is smaller than the sum of its proper divisors (2892732).

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

1606980 is a wasteful number, since it uses less digits than its factorization.

1606980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26795 (or 26793 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1606980 is about 1267.6671487421. The cubic root of 1606980 is about 117.1305431661.

It can be divided in two parts, 160 and 6980, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 1606980 in words is "one million, six hundred six thousand, nine hundred eighty".