134705647 has 2 divisors, whose sum is σ = 134705648. Its totient is φ = 134705646.

The previous prime is 134705591. The next prime is 134705651. The reversal of 134705647 is 746507431.

It is a strong prime.

It is an emirp because it is prime and its reverse (746507431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134705647 - 2²³ = 126317039 is a prime.

It is a super-2 number, since 2×134705647² = 36291222667377218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134705677) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67352823 + 67352824.

It is an arithmetic number, because the mean of its divisors is an integer number (67352824).

Almost surely, 2^134705647 is an apocalyptic number.

134705647 is a deficient number, since it is larger than the sum of its proper divisors (1).

134705647 is an equidigital number, since it uses as much as digits as its factorization.

134705647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 134705647 is about 11606.2761900620. The cubic root of 134705647 is about 512.6196708050.

The spelling of 134705647 in words is "one hundred thirty-four million, seven hundred five thousand, six hundred forty-seven".