647030 has 16 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 255552.

The previous prime is 647011. The next prime is 647033. The reversal of 647030 is 30746.

647030 is nontrivially palindromic in base 4.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 646993 and 647011.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647030.

It is not an unprimeable number, because it can be changed into a prime (647033) by changing a digit.

647030 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2⁶⁴⁷⁰³⁰ is an apocalyptic number.

647030 is a deficient number, since it is larger than the sum of its proper divisors (532330).

647030 is a wasteful number, since it uses less digits than its factorization.

647030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 647030 is about 804.3817501659. The cubic root of 647030 is about 86.4917741963.

Adding to 647030 its reverse (30746), we get a palindrome (677776).

The spelling of 647030 in words is "six hundred forty-seven thousand, thirty".