135621286 has 8 divisors (see below), whose sum is σ = 204454800. Its totient is φ = 67469688.

The previous prime is 135621281. The next prime is 135621331. The reversal of 135621286 is 682126531.

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 (135621281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169981 + ... + 170776.

It is an arithmetic number, because the mean of its divisors is an integer number (25556850).

Almost surely, 2^135621286 is an apocalyptic number.

135621286 is a deficient number, since it is larger than the sum of its proper divisors (68833514).

135621286 is a wasteful number, since it uses less digits than its factorization.

135621286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340958.

The product of its digits is 17280, while the sum is 34.

The square root of 135621286 is about 11645.6552413336. The cubic root of 135621286 is about 513.7785310629.

The spelling of 135621286 in words is "one hundred thirty-five million, six hundred twenty-one thousand, two hundred eighty-six".