134638566 has 8 divisors (see below), whose sum is σ = 269277144. Its totient is φ = 44879520.

The previous prime is 134638519. The next prime is 134638571. The reversal of 134638566 is 665836431.

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

134638566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 11219875 + ... + 11219886.

It is an arithmetic number, because the mean of its divisors is an integer number (33659643).

Almost surely, 2^134638566 is an apocalyptic number.

134638566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134638566 is a wasteful number, since it uses less digits than its factorization.

134638566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22439766.

The product of its digits is 311040, while the sum is 42.

The square root of 134638566 is about 11603.3859713447. The cubic root of 134638566 is about 512.5345648708.

The spelling of 134638566 in words is "one hundred thirty-four million, six hundred thirty-eight thousand, five hundred sixty-six".