147643 has 4 divisors (see below), whose sum is σ = 148608. Its totient is φ = 146680.

The previous prime is 147629. The next prime is 147647. The reversal of 147643 is 346741.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 346741 = 269 ⋅1289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147643 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (147647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (37152).

2¹⁴⁷⁶⁴³ is an apocalyptic number.

147643 is a deficient number, since it is larger than the sum of its proper divisors (965).

147643 is an equidigital number, since it uses as much as digits as its factorization.

147643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964.

The product of its digits is 2016, while the sum is 25.

The square root of 147643 is about 384.2434124354. The cubic root of 147643 is about 52.8531594619.

The spelling of 147643 in words is "one hundred forty-seven thousand, six hundred forty-three".