136503641 has 2 divisors, whose sum is σ = 136503642. Its totient is φ = 136503640.

The previous prime is 136503623. The next prime is 136503671. The reversal of 136503641 is 146305631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131790400 + 4713241 = 11480^2 + 2171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136503641 is a prime.

It is not a weakly prime, because it can be changed into another prime (136503611) 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 as a sum of consecutive naturals, namely, 68251820 + 68251821.

It is an arithmetic number, because the mean of its divisors is an integer number (68251821).

Almost surely, 2^136503641 is an apocalyptic number.

It is an amenable number.

136503641 is a deficient number, since it is larger than the sum of its proper divisors (1).

136503641 is an equidigital number, since it uses as much as digits as its factorization.

136503641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 136503641 is about 11683.4772649242. The cubic root of 136503641 is about 514.8903414368.

The spelling of 136503641 in words is "one hundred thirty-six million, five hundred three thousand, six hundred forty-one".