646010 has 8 divisors (see below), whose sum is σ = 1162836. Its totient is φ = 258400.

The previous prime is 646003. The next prime is 646013. The reversal of 646010 is 10646.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 17161 = 793^2 + 131^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 646010.

It is not an unprimeable number, because it can be changed into a prime (646013) 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 3 ways as a sum of consecutive naturals, for example, 32291 + ... + 32310.

2⁶⁴⁶⁰¹⁰ is an apocalyptic number.

646010 is a deficient number, since it is larger than the sum of its proper divisors (516826).

646010 is a wasteful number, since it uses less digits than its factorization.

646010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64608.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 646010 is about 803.7474727799. The cubic root of 646010 is about 86.4463007722.

Adding to 646010 its reverse (10646), we get a palindrome (656656).

The spelling of 646010 in words is "six hundred forty-six thousand, ten".