133676565 has 24 divisors (see below), whose sum is σ = 235097184. Its totient is φ = 64812000.

The previous prime is 133676549. The next prime is 133676623. The reversal of 133676565 is 565676331.

It is a happy number.

It is not a de Polignac number, because 133676565 - 2⁴ = 133676549 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 35011 + ... + 38640.

It is an arithmetic number, because the mean of its divisors is an integer number (9795716).

Almost surely, 2^133676565 is an apocalyptic number.

133676565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133676565 is a deficient number, since it is larger than the sum of its proper divisors (101420619).

133676565 is a wasteful number, since it uses less digits than its factorization.

133676565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73681 (or 73670 counting only the distinct ones).

The product of its digits is 340200, while the sum is 42.

The square root of 133676565 is about 11561.8581984039. The cubic root of 133676565 is about 511.3109487498.

The spelling of 133676565 in words is "one hundred thirty-three million, six hundred seventy-six thousand, five hundred sixty-five".