134205865 has 8 divisors (see below), whose sum is σ = 161239680. Its totient is φ = 107236272.

The previous prime is 134205857. The next prime is 134205893. The reversal of 134205865 is 568502431.

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 134205865 - 2³ = 134205857 is a prime.

It is a super-2 number, since 2×134205865² = 36022428400796450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134205865.

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 7 ways as a sum of consecutive naturals, for example, 11329 + ... + 19918.

It is an arithmetic number, because the mean of its divisors is an integer number (20154960).

Almost surely, 2^134205865 is an apocalyptic number.

It is an amenable number.

134205865 is a deficient number, since it is larger than the sum of its proper divisors (27033815).

134205865 is an equidigital number, since it uses as much as digits as its factorization.

134205865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32111.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 134205865 is about 11584.7255038693. The cubic root of 134205865 is about 511.9849149710.

The spelling of 134205865 in words is "one hundred thirty-four million, two hundred five thousand, eight hundred sixty-five".