646030 has 32 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 201120.

The previous prime is 646027. The next prime is 646039. The reversal of 646030 is 30646.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 645989 and 646007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁶⁴⁶⁰³⁰ is an apocalyptic number.

646030 is an abundant number, since it is smaller than the sum of its proper divisors (805490).

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

646030 is a wasteful number, since it uses less digits than its factorization.

646030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 646030 is about 803.7599144023. The cubic root of 646030 is about 86.4471928679.

Adding to 646030 its reverse (30646), we get a palindrome (676676).

The spelling of 646030 in words is "six hundred forty-six thousand, thirty".