492643 has 4 divisors (see below), whose sum is σ = 521640. Its totient is φ = 463648.

The previous prime is 492641. The next prime is 492647. The reversal of 492643 is 346294.

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 492643 - 2¹ = 492641 is a prime.

It is a Duffinian number.

492643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (492641) 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, 14473 + ... + 14506.

It is an arithmetic number, because the mean of its divisors is an integer number (130410).

2⁴⁹²⁶⁴³ is an apocalyptic number.

492643 is a deficient number, since it is larger than the sum of its proper divisors (28997).

492643 is a wasteful number, since it uses less digits than its factorization.

492643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28996.

The product of its digits is 5184, while the sum is 28.

The square root of 492643 is about 701.8853182679. The cubic root of 492643 is about 78.9788438783.

The spelling of 492643 in words is "four hundred ninety-two thousand, six hundred forty-three".