136743865 has 8 divisors (see below), whose sum is σ = 166170240. Its totient is φ = 108010032.

The previous prime is 136743839. The next prime is 136743877. The reversal of 136743865 is 568347631.

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 136743865 - 2¹³ = 136735673 is a prime.

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, 172699 + ... + 173488.

It is an arithmetic number, because the mean of its divisors is an integer number (20771280).

Almost surely, 2^136743865 is an apocalyptic number.

It is an amenable number.

136743865 is a deficient number, since it is larger than the sum of its proper divisors (29426375).

136743865 is an equidigital number, since it uses as much as digits as its factorization.

136743865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346271.

The product of its digits is 362880, while the sum is 43.

The square root of 136743865 is about 11693.7532469263. The cubic root of 136743865 is about 515.1922052549.

The spelling of 136743865 in words is "one hundred thirty-six million, seven hundred forty-three thousand, eight hundred sixty-five".