135810646 has 16 divisors (see below), whose sum is σ = 212176800. Its totient is φ = 65136960.

The previous prime is 135810643. The next prime is 135810667. The reversal of 135810646 is 646018531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135810643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7671 + ... + 18178.

It is an arithmetic number, because the mean of its divisors is an integer number (13261050).

Almost surely, 2^135810646 is an apocalyptic number.

135810646 is a deficient number, since it is larger than the sum of its proper divisors (76366154).

135810646 is a wasteful number, since it uses less digits than its factorization.

135810646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25959.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 135810646 is about 11653.7824760890. The cubic root of 135810646 is about 514.0175394097.

The spelling of 135810646 in words is "one hundred thirty-five million, eight hundred ten thousand, six hundred forty-six".