136534663 has 4 divisors (see below), whose sum is σ = 136561320. Its totient is φ = 136508008.

The previous prime is 136534661. The next prime is 136534681. The reversal of 136534663 is 366435631.

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 136534663 - 2¹ = 136534661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136534661) 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, 2953 + ... + 16786.

It is an arithmetic number, because the mean of its divisors is an integer number (34140330).

Almost surely, 2^136534663 is an apocalyptic number.

136534663 is a deficient number, since it is larger than the sum of its proper divisors (26657).

136534663 is an equidigital number, since it uses as much as digits as its factorization.

136534663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26656.

The product of its digits is 116640, while the sum is 37.

The square root of 136534663 is about 11684.8047908384. The cubic root of 136534663 is about 514.9293433715.

The spelling of 136534663 in words is "one hundred thirty-six million, five hundred thirty-four thousand, six hundred sixty-three".