646093 has 8 divisors (see below), whose sum is σ = 770688. Its totient is φ = 529584.

The previous prime is 646073. The next prime is 646099. The reversal of 646093 is 390646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 646093 - 2⁹ = 645581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (96336).

2⁶⁴⁶⁰⁹³ is an apocalyptic number.

It is an amenable number.

646093 is a deficient number, since it is larger than the sum of its proper divisors (124595).

646093 is a wasteful number, since it uses less digits than its factorization.

646093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 646093 is about 803.7991042543. The cubic root of 646093 is about 86.4500028489.

The spelling of 646093 in words is "six hundred forty-six thousand, ninety-three".