135964897 has 8 divisors (see below), whose sum is σ = 139629672. Its totient is φ = 132316800.

The previous prime is 135964883. The next prime is 135964921. The reversal of 135964897 is 798469531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24641296 + 111323601 = 4964^2 + 10551^2 .

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 135964897 - 2²⁷ = 1747169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135964837) 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, 13323 + ... + 21199.

It is an arithmetic number, because the mean of its divisors is an integer number (17453709).

Almost surely, 2^135964897 is an apocalyptic number.

It is an amenable number.

135964897 is a deficient number, since it is larger than the sum of its proper divisors (3664775).

135964897 is an equidigital number, since it uses as much as digits as its factorization.

135964897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8339.

The product of its digits is 1632960, while the sum is 52.

The square root of 135964897 is about 11660.3986638537. The cubic root of 135964897 is about 514.2120693746.

The spelling of 135964897 in words is "one hundred thirty-five million, nine hundred sixty-four thousand, eight hundred ninety-seven".