135699001 has 2 divisors, whose sum is σ = 135699002. Its totient is φ = 135699000.

The previous prime is 135698999. The next prime is 135699041. The reversal of 135699001 is 100996531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77862976 + 57836025 = 8824^2 + 7605^2 .

It is a cyclic number.

It is not a de Polignac number, because 135699001 - 2¹ = 135698999 is a prime.

Together with 135698999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135699041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67849500 + 67849501.

It is an arithmetic number, because the mean of its divisors is an integer number (67849501).

Almost surely, 2^135699001 is an apocalyptic number.

It is an amenable number.

135699001 is a deficient number, since it is larger than the sum of its proper divisors (1).

135699001 is an equidigital number, since it uses as much as digits as its factorization.

135699001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 135699001 is about 11648.9914155690. The cubic root of 135699001 is about 513.8766490783.

The spelling of 135699001 in words is "one hundred thirty-five million, six hundred ninety-nine thousand, one".