133170865 has 8 divisors (see below), whose sum is σ = 159880320. Its totient is φ = 106486512.

The previous prime is 133170857. The next prime is 133170883. The reversal of 133170865 is 568071331.

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

It is a cyclic number.

It is not a de Polignac number, because 133170865 - 2³ = 133170857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133170865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8616 + ... + 18454.

It is an arithmetic number, because the mean of its divisors is an integer number (19985040).

Almost surely, 2^133170865 is an apocalyptic number.

It is an amenable number.

133170865 is a deficient number, since it is larger than the sum of its proper divisors (26709455).

133170865 is an equidigital number, since it uses as much as digits as its factorization.

133170865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12551.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 133170865 is about 11539.9681542022. The cubic root of 133170865 is about 510.6653688970.

The spelling of 133170865 in words is "one hundred thirty-three million, one hundred seventy thousand, eight hundred sixty-five".