135013661 has 2 divisors, whose sum is σ = 135013662. Its totient is φ = 135013660.

The previous prime is 135013651. The next prime is 135013667. The reversal of 135013661 is 166310531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 43811161 = 9550^2 + 6619^2 .

It is an emirp because it is prime and its reverse (166310531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135013661 - 2⁶ = 135013597 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135013661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135013667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67506830 + 67506831.

It is an arithmetic number, because the mean of its divisors is an integer number (67506831).

Almost surely, 2^135013661 is an apocalyptic number.

It is an amenable number.

135013661 is a deficient number, since it is larger than the sum of its proper divisors (1).

135013661 is an equidigital number, since it uses as much as digits as its factorization.

135013661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 135013661 is about 11619.5378995896. The cubic root of 135013661 is about 513.0100871093.

The spelling of 135013661 in words is "one hundred thirty-five million, thirteen thousand, six hundred sixty-one".