940643 has 4 divisors (see below), whose sum is σ = 1026168. Its totient is φ = 855120.

The previous prime is 940619. The next prime is 940649. The reversal of 940643 is 346049.

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

It is a cyclic number.

It is not a de Polignac number, because 940643 - 2¹⁶ = 875107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (940649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42746 + ... + 42767.

It is an arithmetic number, because the mean of its divisors is an integer number (256542).

2⁹⁴⁰⁶⁴³ is an apocalyptic number.

940643 is a deficient number, since it is larger than the sum of its proper divisors (85525).

940643 is a wasteful number, since it uses less digits than its factorization.

940643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85524.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 940643 is about 969.8675167259. The cubic root of 940643 is about 97.9809417333.

It can be divided in two parts, 9406 and 43, that added together give a palindrome (9449).

The spelling of 940643 in words is "nine hundred forty thousand, six hundred forty-three".