1660056 has 24 divisors (see below), whose sum is σ = 4165980. Its totient is φ = 551248.

The previous prime is 1660039. The next prime is 1660063. The reversal of 1660056 is 6500661.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6181 + ... + 6443.

2^1660056 is an apocalyptic number.

It is an amenable number.

1660056 is an abundant number, since it is smaller than the sum of its proper divisors (2505924).

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

1660056 is an equidigital number, since it uses as much as digits as its factorization.

1660056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1660056 is about 1288.4316047040. The cubic root of 1660056 is about 118.4061461991.

Multiplying 1660056 by its sum of digits (24), we get a square (39841344 = 6312²).

1660056 divided by its sum of digits (24) gives a square (69169 = 263²).

The spelling of 1660056 in words is "one million, six hundred sixty thousand, fifty-six".