136646663 has 8 divisors (see below), whose sum is σ = 144793008. Its totient is φ = 128512384.

The previous prime is 136646641. The next prime is 136646681. The reversal of 136646663 is 366646631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136646663 - 2⁸ = 136646407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136646663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136646603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32045 + ... + 36057.

It is an arithmetic number, because the mean of its divisors is an integer number (18099126).

Almost surely, 2^136646663 is an apocalyptic number.

136646663 is a deficient number, since it is larger than the sum of its proper divisors (8146345).

136646663 is a wasteful number, since it uses less digits than its factorization.

136646663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033.

The product of its digits is 279936, while the sum is 41.

The square root of 136646663 is about 11689.5963574454. The cubic root of 136646663 is about 515.0701045107.

The spelling of 136646663 in words is "one hundred thirty-six million, six hundred forty-six thousand, six hundred sixty-three".