133663669 has 4 divisors (see below), whose sum is σ = 133845280. Its totient is φ = 133482060.

The previous prime is 133663643. The next prime is 133663681. The reversal of 133663669 is 966366331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133663669 - 2¹⁹ = 133139381 is a prime.

It is a super-2 number, since 2×133663669² = 35731952821083122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133663069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89697 + ... + 91174.

It is an arithmetic number, because the mean of its divisors is an integer number (33461320).

Almost surely, 2^133663669 is an apocalyptic number.

It is an amenable number.

133663669 is a deficient number, since it is larger than the sum of its proper divisors (181611).

133663669 is an equidigital number, since it uses as much as digits as its factorization.

133663669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181610.

The product of its digits is 314928, while the sum is 43.

The square root of 133663669 is about 11561.3004891318. The cubic root of 133663669 is about 511.2945058825.

The spelling of 133663669 in words is "one hundred thirty-three million, six hundred sixty-three thousand, six hundred sixty-nine".