133495665 has 8 divisors (see below), whose sum is σ = 213593088. Its totient is φ = 71197680.

The previous prime is 133495603. The next prime is 133495699. The reversal of 133495665 is 566594331.

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

It is not a de Polignac number, because 133495665 - 2⁸ = 133495409 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4449841 + ... + 4449870.

It is an arithmetic number, because the mean of its divisors is an integer number (26699136).

Almost surely, 2^133495665 is an apocalyptic number.

133495665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133495665 is a deficient number, since it is larger than the sum of its proper divisors (80097423).

133495665 is an equidigital number, since it uses as much as digits as its factorization.

133495665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8899719.

The product of its digits is 291600, while the sum is 42.

The square root of 133495665 is about 11554.0324129717. The cubic root of 133495665 is about 511.0801979921.

The spelling of 133495665 in words is "one hundred thirty-three million, four hundred ninety-five thousand, six hundred sixty-five".