303669 has 20 divisors (see below), whose sum is σ = 476256. Its totient is φ = 192456.

The previous prime is 303649. The next prime is 303679. The reversal of 303669 is 966303.

It is not a de Polignac number, because 303669 - 2⁹ = 303157 is a prime.

It is a super-2 number, since 2×303669² = 184429723122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

303669 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 303669.

It is not an unprimeable number, because it can be changed into a prime (303619) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1782 + ... + 1944.

2³⁰³⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

303669 is a deficient number, since it is larger than the sum of its proper divisors (172587).

303669 is a wasteful number, since it uses less digits than its factorization.

303669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 303669 is about 551.0617025343. The cubic root of 303669 is about 67.2150954608.

The spelling of 303669 in words is "three hundred three thousand, six hundred sixty-nine".