135765643 has 6 divisors (see below), whose sum is σ = 147012684. Its totient is φ = 125321976.

The previous prime is 135765631. The next prime is 135765653. The reversal of 135765643 is 346567531.

135765643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-135765643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135765596 and 135765605.

It is not an unprimeable number, because it can be changed into a prime (135765613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401505 + ... + 401842.

It is an arithmetic number, because the mean of its divisors is an integer number (24502114).

Almost surely, 2^135765643 is an apocalyptic number.

135765643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135765643 is a deficient number, since it is larger than the sum of its proper divisors (11247041).

135765643 is an equidigital number, since it uses as much as digits as its factorization.

135765643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803373 (or 803360 counting only the distinct ones).

The product of its digits is 226800, while the sum is 40.

The square root of 135765643 is about 11651.8514837772. The cubic root of 135765643 is about 513.9607571972.

The spelling of 135765643 in words is "one hundred thirty-five million, seven hundred sixty-five thousand, six hundred forty-three".