665106153 has 16 divisors (see below), whose sum is σ = 934030080. Its totient is φ = 419820624.

The previous prime is 665106133. The next prime is 665106161. The reversal of 665106153 is 351601566.

It is not a de Polignac number, because 665106153 - 2⁶ = 665106089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (665106103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180750 + ... + 184392.

It is an arithmetic number, because the mean of its divisors is an integer number (58376880).

Almost surely, 2^665106153 is an apocalyptic number.

It is an amenable number.

665106153 is a deficient number, since it is larger than the sum of its proper divisors (268923927).

665106153 is a wasteful number, since it uses less digits than its factorization.

665106153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 665106153 is about 25789.6520527129. The cubic root of 665106153 is about 872.8983150801.

The spelling of 665106153 in words is "six hundred sixty-five million, one hundred six thousand, one hundred fifty-three".