1663229 has 8 divisors (see below), whose sum is σ = 1772928. Its totient is φ = 1554880.

The previous prime is 1663223. The next prime is 1663267. The reversal of 1663229 is 9223661.

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 1663229 - 2¹⁶ = 1597693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663223) 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, 3644 + ... + 4074.

It is an arithmetic number, because the mean of its divisors is an integer number (221616).

2^1663229 is an apocalyptic number.

It is an amenable number.

1663229 is a deficient number, since it is larger than the sum of its proper divisors (109699).

1663229 is a wasteful number, since it uses less digits than its factorization.

1663229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its digits is 3888, while the sum is 29.

The square root of 1663229 is about 1289.6623589141. The cubic root of 1663229 is about 118.4815379500.

It can be divided in two parts, 16632 and 29, that added together give a palindrome (16661).

The spelling of 1663229 in words is "one million, six hundred sixty-three thousand, two hundred twenty-nine".