945643 has 4 divisors (see below), whose sum is σ = 954928. Its totient is φ = 936360.

The previous prime is 945631. The next prime is 945647. The reversal of 945643 is 346549.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945647) 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, 4488 + ... + 4693.

It is an arithmetic number, because the mean of its divisors is an integer number (238732).

2⁹⁴⁵⁶⁴³ is an apocalyptic number.

945643 is a deficient number, since it is larger than the sum of its proper divisors (9285).

945643 is a wasteful number, since it uses less digits than its factorization.

945643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284.

The product of its digits is 12960, while the sum is 31.

The square root of 945643 is about 972.4417720357. The cubic root of 945643 is about 98.1542413562.

The spelling of 945643 in words is "nine hundred forty-five thousand, six hundred forty-three".