136470865 has 4 divisors (see below), whose sum is σ = 163765044. Its totient is φ = 109176688.

The previous prime is 136470857. The next prime is 136470869. The reversal of 136470865 is 568074631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 90326016 = 6793^2 + 9504^2 .

It is a cyclic number.

It is not a de Polignac number, because 136470865 - 2³ = 136470857 is a prime.

It is a super-3 number, since 3×136470865³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136470869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13647082 + ... + 13647091.

It is an arithmetic number, because the mean of its divisors is an integer number (40941261).

Almost surely, 2^136470865 is an apocalyptic number.

It is an amenable number.

136470865 is a deficient number, since it is larger than the sum of its proper divisors (27294179).

136470865 is an equidigital number, since it uses as much as digits as its factorization.

136470865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27294178.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 136470865 is about 11682.0745161123. The cubic root of 136470865 is about 514.8491278921.

The spelling of 136470865 in words is "one hundred thirty-six million, four hundred seventy thousand, eight hundred sixty-five".