136643000 has 128 divisors (see below), whose sum is σ = 360097920. Its totient is φ = 48153600.

The previous prime is 136642981. The next prime is 136643011. The reversal of 136643000 is 346631.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298772 + ... + 299228.

It is an arithmetic number, because the mean of its divisors is an integer number (2813265).

Almost surely, 2^136643000 is an apocalyptic number.

136643000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136643000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180048960).

136643000 is an abundant number, since it is smaller than the sum of its proper divisors (223454920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136643000 is a wasteful number, since it uses less digits than its factorization.

136643000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 136643000 is about 11689.4396786159. The cubic root of 136643000 is about 515.0655020842.

Adding to 136643000 its reverse (346631), we get a palindrome (136989631).

The spelling of 136643000 in words is "one hundred thirty-six million, six hundred forty-three thousand".