1659560 has 32 divisors (see below), whose sum is σ = 4268160. Its totient is φ = 568896.

The previous prime is 1659551. The next prime is 1659569. The reversal of 1659560 is 659561.

It is an interprime number because it is at equal distance from previous prime (1659551) and next prime (1659569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659569) 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, 2684 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (133380).

2^1659560 is an apocalyptic number.

1659560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1659560 is an abundant number, since it is smaller than the sum of its proper divisors (2608600).

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

1659560 is a wasteful number, since it uses less digits than its factorization.

1659560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945 (or 5941 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 1659560 is about 1288.2391082404. The cubic root of 1659560 is about 118.3943523603.

Subtracting from 1659560 its reverse (659561), we obtain a palindrome (999999).

The spelling of 1659560 in words is "one million, six hundred fifty-nine thousand, five hundred sixty".