136621443 has 8 divisors (see below), whose sum is σ = 208185088. Its totient is φ = 78069384.

The previous prime is 136621423. The next prime is 136621451. The reversal of 136621443 is 344126631.

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

It is not a de Polignac number, because 136621443 - 2⁵ = 136621411 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 136621443.

It is not an unprimeable number, because it can be changed into a prime (136621423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252871 + ... + 3252912.

It is an arithmetic number, because the mean of its divisors is an integer number (26023136).

Almost surely, 2^136621443 is an apocalyptic number.

136621443 is a deficient number, since it is larger than the sum of its proper divisors (71563645).

136621443 is an equidigital number, since it uses as much as digits as its factorization.

136621443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505793.

The product of its digits is 10368, while the sum is 30.

The square root of 136621443 is about 11688.5175706759. The cubic root of 136621443 is about 515.0384148302.

The spelling of 136621443 in words is "one hundred thirty-six million, six hundred twenty-one thousand, four hundred forty-three".