135412666 has 8 divisors (see below), whose sum is σ = 203722740. Its totient is φ = 67505088.

The previous prime is 135412663. The next prime is 135412703. The reversal of 135412666 is 666214531.

It can be written as a sum of positive squares in 2 ways, for example, as 121462441 + 13950225 = 11021^2 + 3735^2 .

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

It is a super-2 number, since 2×135412666² = 36673180226455112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135412663) 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, 99781 + ... + 101128.

Almost surely, 2^135412666 is an apocalyptic number.

135412666 is a deficient number, since it is larger than the sum of its proper divisors (68310074).

135412666 is a wasteful number, since it uses less digits than its factorization.

135412666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201248.

The product of its digits is 25920, while the sum is 34.

The square root of 135412666 is about 11636.6948056568. The cubic root of 135412666 is about 513.5149552229.

The spelling of 135412666 in words is "one hundred thirty-five million, four hundred twelve thousand, six hundred sixty-six".