646163 has 6 divisors (see below), whose sum is σ = 751716. Its totient is φ = 553812.

The previous prime is 646159. The next prime is 646169. The reversal of 646163 is 361646.

646163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646163 - 2² = 646159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6545 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (125286).

2⁶⁴⁶¹⁶³ is an apocalyptic number.

646163 is a deficient number, since it is larger than the sum of its proper divisors (105553).

646163 is a wasteful number, since it uses less digits than its factorization.

646163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201 (or 13194 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 646163 is about 803.8426462934. The cubic root of 646163 is about 86.4531248358.

The spelling of 646163 in words is "six hundred forty-six thousand, one hundred sixty-three".