646046 has 8 divisors (see below), whose sum is σ = 973080. Its totient is φ = 321688.

The previous prime is 646039. The next prime is 646067. The reversal of 646046 is 640646.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 125 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (121635).

2⁶⁴⁶⁰⁴⁶ is an apocalyptic number.

646046 is a deficient number, since it is larger than the sum of its proper divisors (327034).

646046 is a wasteful number, since it uses less digits than its factorization.

646046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 646046 is about 803.7698675616. The cubic root of 646046 is about 86.4479065312.

The spelling of 646046 in words is "six hundred forty-six thousand, forty-six".