133662165 has 64 divisors (see below), whose sum is σ = 265155072. Its totient is φ = 55987200.

The previous prime is 133662149. The next prime is 133662181. The reversal of 133662165 is 561266331.

It is an interprime number because it is at equal distance from previous prime (133662149) and next prime (133662181).

It is not a de Polignac number, because 133662165 - 2⁴ = 133662149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246795 + ... + 247335.

It is an arithmetic number, because the mean of its divisors is an integer number (4143048).

Almost surely, 2^133662165 is an apocalyptic number.

133662165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133662165 is a deficient number, since it is larger than the sum of its proper divisors (131492907).

133662165 is a wasteful number, since it uses less digits than its factorization.

133662165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its digits is 19440, while the sum is 33.

The square root of 133662165 is about 11561.2354443632. The cubic root of 133662165 is about 511.2925881592.

The spelling of 133662165 in words is "one hundred thirty-three million, six hundred sixty-two thousand, one hundred sixty-five".