147644066 has 4 divisors (see below), whose sum is σ = 221466102. Its totient is φ = 73822032.

The previous prime is 147644059. The next prime is 147644083. The reversal of 147644066 is 660446741.

147644066 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 110859841 + 36784225 = 10529^2 + 6065^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36911015 + ... + 36911018.

Almost surely, 2^147644066 is an apocalyptic number.

147644066 is a deficient number, since it is larger than the sum of its proper divisors (73822036).

147644066 is an equidigital number, since it uses as much as digits as its factorization.

147644066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73822035.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 147644066 is about 12150.8874573012. The cubic root of 147644066 is about 528.5328666362.

The spelling of 147644066 in words is "one hundred forty-seven million, six hundred forty-four thousand, sixty-six".