135997286 has 8 divisors (see below), whose sum is σ = 205976784. Its totient is φ = 67338360.

The previous prime is 135997283. The next prime is 135997291. The reversal of 135997286 is 682799531.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135997283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329885 + ... + 330296.

It is an arithmetic number, because the mean of its divisors is an integer number (25747098).

Almost surely, 2^135997286 is an apocalyptic number.

135997286 is a deficient number, since it is larger than the sum of its proper divisors (69979498).

135997286 is a wasteful number, since it uses less digits than its factorization.

135997286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660286.

The product of its digits is 816480, while the sum is 50.

The square root of 135997286 is about 11661.7874273201. The cubic root of 135997286 is about 514.2528972960.

The spelling of 135997286 in words is "one hundred thirty-five million, nine hundred ninety-seven thousand, two hundred eighty-six".