134644643 has 8 divisors (see below), whose sum is σ = 154338912. Its totient is φ = 115065216.

The previous prime is 134644639. The next prime is 134644649. The reversal of 134644643 is 346446431.

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

It is not a de Polignac number, because 134644643 - 2² = 134644639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134644649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26180 + ... + 30897.

It is an arithmetic number, because the mean of its divisors is an integer number (19292364).

Almost surely, 2^134644643 is an apocalyptic number.

134644643 is a deficient number, since it is larger than the sum of its proper divisors (19694269).

134644643 is an equidigital number, since it uses as much as digits as its factorization.

134644643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57421.

The product of its digits is 82944, while the sum is 35.

The square root of 134644643 is about 11603.6478316088. The cubic root of 134644643 is about 512.5422759494.

The spelling of 134644643 in words is "one hundred thirty-four million, six hundred forty-four thousand, six hundred forty-three".