136621033 has 8 divisors (see below), whose sum is σ = 139224488. Its totient is φ = 134037504.

The previous prime is 136621021. The next prime is 136621063. The reversal of 136621033 is 330126631.

It can be written as a sum of positive squares in 4 ways, for example, as 851929 + 135769104 = 923^2 + 11652^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 136621033 - 2²¹ = 134523881 is a prime.

It is the 11689-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136620989 and 136621007.

It is not an unprimeable number, because it can be changed into a prime (136621003) by changing a digit.

It is a nontrivial repunit in base 11688.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9241 + ... + 18937.

It is an arithmetic number, because the mean of its divisors is an integer number (17403061).

Almost surely, 2^136621033 is an apocalyptic number.

It is an amenable number.

136621033 is a deficient number, since it is larger than the sum of its proper divisors (2603455).

136621033 is an equidigital number, since it uses as much as digits as its factorization.

136621033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 136621033 is about 11688.5000320828. The cubic root of 136621033 is about 515.0378996207.

Adding to 136621033 its reverse (330126631), we get a palindrome (466747664).

The spelling of 136621033 in words is "one hundred thirty-six million, six hundred twenty-one thousand, thirty-three".