133366669 has 4 divisors (see below), whose sum is σ = 133407196. Its totient is φ = 133326144.

The previous prime is 133366631. The next prime is 133366691. The reversal of 133366669 is 966663331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966663331 = 26713 ⋅36187.

It can be written as a sum of positive squares in 2 ways, for example, as 63393444 + 69973225 = 7962^2 + 8365^2 .

It is a cyclic number.

It is not a de Polignac number, because 133366669 - 2¹⁵ = 133333901 is a prime.

It is a super-2 number, since 2×133366669² = 35573336800311122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133366169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14844 + ... + 22069.

It is an arithmetic number, because the mean of its divisors is an integer number (33351799).

Almost surely, 2^133366669 is an apocalyptic number.

133366669 is the 6668-th hex number.

It is an amenable number.

133366669 is a deficient number, since it is larger than the sum of its proper divisors (40527).

133366669 is an equidigital number, since it uses as much as digits as its factorization.

133366669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40526.

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

The square root of 133366669 is about 11548.4487702895. The cubic root of 133366669 is about 510.9155271076.

The spelling of 133366669 in words is "one hundred thirty-three million, three hundred sixty-six thousand, six hundred sixty-nine".