133665207 has 32 divisors (see below), whose sum is σ = 198132480. Its totient is φ = 79630080.

The previous prime is 133665197. The next prime is 133665221. The reversal of 133665207 is 702566331.

It is not a de Polignac number, because 133665207 - 2⁶ = 133665143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133665307) 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 31 ways as a sum of consecutive naturals, for example, 285988 + ... + 286454.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2^133665207 is an apocalyptic number.

133665207 is a deficient number, since it is larger than the sum of its proper divisors (64467273).

133665207 is a wasteful number, since it uses less digits than its factorization.

133665207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 133665207 is about 11561.3670039490. The cubic root of 133665207 is about 511.2964669438.

The spelling of 133665207 in words is "one hundred thirty-three million, six hundred sixty-five thousand, two hundred seven".