1663319 has 8 divisors (see below), whose sum is σ = 1916928. Its totient is φ = 1413720.

The previous prime is 1663309. The next prime is 1663327. The reversal of 1663319 is 9133661.

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

It is not a de Polignac number, because 1663319 - 2⁴ = 1663303 is a prime.

It is a super-2 number, since 2×1663319² = 5533260191522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1663291 and 1663300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47 + ... + 1824.

It is an arithmetic number, because the mean of its divisors is an integer number (239616).

2^1663319 is an apocalyptic number.

1663319 is a deficient number, since it is larger than the sum of its proper divisors (253609).

1663319 is a wasteful number, since it uses less digits than its factorization.

1663319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005.

The product of its digits is 2916, while the sum is 29.

The square root of 1663319 is about 1289.6972512958. The cubic root of 1663319 is about 118.4836749871.

The spelling of 1663319 in words is "one million, six hundred sixty-three thousand, three hundred nineteen".