646260 has 24 divisors (see below), whose sum is σ = 1809696. Its totient is φ = 172320.

The previous prime is 646259. The next prime is 646267. The reversal of 646260 is 62646.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 646260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646267) 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 7 ways as a sum of consecutive naturals, for example, 5326 + ... + 5445.

It is an arithmetic number, because the mean of its divisors is an integer number (75404).

2⁶⁴⁶²⁶⁰ is an apocalyptic number.

646260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

646260 is an abundant number, since it is smaller than the sum of its proper divisors (1163436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646260 is a wasteful number, since it uses less digits than its factorization.

646260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10783 (or 10781 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 646260 is about 803.9029792208. The cubic root of 646260 is about 86.4574506450.

The spelling of 646260 in words is "six hundred forty-six thousand, two hundred sixty".