135667216 has 20 divisors (see below), whose sum is σ = 263886012. Its totient is φ = 67567616.

The previous prime is 135667211. The next prime is 135667223. The reversal of 135667216 is 612766531.

It can be written as a sum of positive squares in 2 ways, for example, as 75759616 + 59907600 = 8704^2 + 7740^2 .

It is not an unprimeable number, because it can be changed into a prime (135667211) 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, 12385 + ... + 20608.

Almost surely, 2^135667216 is an apocalyptic number.

135667216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135667216 is a deficient number, since it is larger than the sum of its proper divisors (128218796).

135667216 is a wasteful number, since it uses less digits than its factorization.

135667216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33258 (or 33252 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 135667216 is about 11647.6270544691. The cubic root of 135667216 is about 513.8365238879.

The spelling of 135667216 in words is "one hundred thirty-five million, six hundred sixty-seven thousand, two hundred sixteen".