1663080 has 32 divisors (see below), whose sum is σ = 4989600. Its totient is φ = 443456.

The previous prime is 1663073. The next prime is 1663091. The reversal of 1663080 is 803661.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1663080.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6810 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (155925).

2^1663080 is an apocalyptic number.

1663080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663080 is an abundant number, since it is smaller than the sum of its proper divisors (3326520).

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

1663080 is a wasteful number, since it uses less digits than its factorization.

1663080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13873 (or 13869 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1663080 is about 1289.6045905625. The cubic root of 1663080 is about 118.4779997969.

The spelling of 1663080 in words is "one million, six hundred sixty-three thousand, eighty".