1663058 has 4 divisors (see below), whose sum is σ = 2494590. Its totient is φ = 831528.

The previous prime is 1663031. The next prime is 1663073. The reversal of 1663058 is 8503661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8503661 = 2789 ⋅3049.

It can be written as a sum of positive squares in only one way, i.e., 1385329 + 277729 = 1177^2 + 527^2 .

It is a super-3 number, since 3×1663058³ = 13798867418367573336, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1663058.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415763 + ... + 415766.

2^1663058 is an apocalyptic number.

1663058 is a deficient number, since it is larger than the sum of its proper divisors (831532).

1663058 is an equidigital number, since it uses as much as digits as its factorization.

1663058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831531.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1663058 is about 1289.5960607880. The cubic root of 1663058 is about 118.4774773672.

The spelling of 1663058 in words is "one million, six hundred sixty-three thousand, fifty-eight".