136629401 has 2 divisors, whose sum is σ = 136629402. Its totient is φ = 136629400.

The previous prime is 136629379. The next prime is 136629421. The reversal of 136629401 is 104926631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135745801 + 883600 = 11651^2 + 940^2 .

It is an emirp because it is prime and its reverse (104926631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136629401 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (136629421) 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, 68314700 + 68314701.

It is an arithmetic number, because the mean of its divisors is an integer number (68314701).

Almost surely, 2^136629401 is an apocalyptic number.

It is an amenable number.

136629401 is a deficient number, since it is larger than the sum of its proper divisors (1).

136629401 is an equidigital number, since it uses as much as digits as its factorization.

136629401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 136629401 is about 11688.8579852781. The cubic root of 136629401 is about 515.0484147151.

The spelling of 136629401 in words is "one hundred thirty-six million, six hundred twenty-nine thousand, four hundred one".