646335 has 24 divisors (see below), whose sum is σ = 1145664. Its totient is φ = 336960.

The previous prime is 646309. The next prime is 646339. The reversal of 646335 is 533646.

It is not a de Polignac number, because 646335 - 2⁶ = 646271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 646299 and 646308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2250 + ... + 2520.

It is an arithmetic number, because the mean of its divisors is an integer number (47736).

2⁶⁴⁶³³⁵ is an apocalyptic number.

646335 is a deficient number, since it is larger than the sum of its proper divisors (499329).

646335 is a wasteful number, since it uses less digits than its factorization.

646335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 332 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 646335 is about 803.9496252876. The cubic root of 646335 is about 86.4607950461.

The spelling of 646335 in words is "six hundred forty-six thousand, three hundred thirty-five".