134640566 has 8 divisors (see below), whose sum is σ = 204805584. Its totient is φ = 66372040.

The previous prime is 134640563. The next prime is 134640581. The reversal of 134640566 is 665046431.

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 (134640563) 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, 473945 + ... + 474228.

It is an arithmetic number, because the mean of its divisors is an integer number (25600698).

Almost surely, 2^134640566 is an apocalyptic number.

134640566 is a deficient number, since it is larger than the sum of its proper divisors (70165018).

134640566 is an equidigital number, since it uses as much as digits as its factorization.

134640566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948246.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 134640566 is about 11603.4721527653. The cubic root of 134640566 is about 512.5371026877.

Adding to 134640566 its reverse (665046431), we get a palindrome (799686997).

The spelling of 134640566 in words is "one hundred thirty-four million, six hundred forty thousand, five hundred sixty-six".