136820963 has 4 divisors (see below), whose sum is σ = 138175728. Its totient is φ = 135466200.

The previous prime is 136820953. The next prime is 136821019. The reversal of 136820963 is 369028631.

136820963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 136820963 - 2⁸ = 136820707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136820933) 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, 677231 + ... + 677432.

It is an arithmetic number, because the mean of its divisors is an integer number (34543932).

Almost surely, 2^136820963 is an apocalyptic number.

136820963 is a deficient number, since it is larger than the sum of its proper divisors (1354765).

136820963 is a wasteful number, since it uses less digits than its factorization.

136820963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354764.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 136820963 is about 11697.0493287837. The cubic root of 136820963 is about 515.2890111239.

The spelling of 136820963 in words is "one hundred thirty-six million, eight hundred twenty thousand, nine hundred sixty-three".