135697945 has 8 divisors (see below), whose sum is σ = 164799936. Its totient is φ = 107250096.

The previous prime is 135697937. The next prime is 135697949. The reversal of 135697945 is 549796531.

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

It is a cyclic number.

It is not a de Polignac number, because 135697945 - 2³ = 135697937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135697949) 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, 163077 + ... + 163906.

It is an arithmetic number, because the mean of its divisors is an integer number (20599992).

Almost surely, 2^135697945 is an apocalyptic number.

It is an amenable number.

135697945 is a deficient number, since it is larger than the sum of its proper divisors (29101991).

135697945 is an equidigital number, since it uses as much as digits as its factorization.

135697945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327071.

The product of its digits is 1020600, while the sum is 49.

The square root of 135697945 is about 11648.9460896684. The cubic root of 135697945 is about 513.8753160909.

The spelling of 135697945 in words is "one hundred thirty-five million, six hundred ninety-seven thousand, nine hundred forty-five".