646113 has 8 divisors (see below), whose sum is σ = 927808. Its totient is φ = 397584.

The previous prime is 646103. The next prime is 646147. The reversal of 646113 is 311646.

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

It is not a de Polignac number, because 646113 - 2⁸ = 645857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 646113.

It is not an unprimeable number, because it can be changed into a prime (646103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8245 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (115976).

2⁶⁴⁶¹¹³ is an apocalyptic number.

It is an amenable number.

646113 is a deficient number, since it is larger than the sum of its proper divisors (281695).

646113 is a wasteful number, since it uses less digits than its factorization.

646113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16583.

The product of its digits is 432, while the sum is 21.

The square root of 646113 is about 803.8115450776. The cubic root of 646113 is about 86.4508948682.

Adding to 646113 its reverse (311646), we get a palindrome (957759).

The spelling of 646113 in words is "six hundred forty-six thousand, one hundred thirteen".