1663059 has 8 divisors (see below), whose sum is σ = 2347920. Its totient is φ = 1043456.

The previous prime is 1663031. The next prime is 1663073. The reversal of 1663059 is 9503661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1663059 - 2⁵ = 1663027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1663009) 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, 16254 + ... + 16355.

It is an arithmetic number, because the mean of its divisors is an integer number (293490).

2^1663059 is an apocalyptic number.

1663059 is a deficient number, since it is larger than the sum of its proper divisors (684861).

1663059 is a wasteful number, since it uses less digits than its factorization.

1663059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32629.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 1663059 is about 1289.5964485063. The cubic root of 1663059 is about 118.4775011141.

The spelling of 1663059 in words is "one million, six hundred sixty-three thousand, fifty-nine".