653430 has 32 divisors (see below), whose sum is σ = 1638144. Its totient is φ = 166496.

The previous prime is 653363. The next prime is 653431. The reversal of 653430 is 34356.

It is a junction number, because it is equal to n+sod(n) for n = 653397 and 653406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653431) by changing a digit.

653430 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 15 ways as a sum of consecutive naturals, for example, 217 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (51192).

2⁶⁵³⁴³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819072).

653430 is an abundant number, since it is smaller than the sum of its proper divisors (984714).

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

653430 is a wasteful number, since it uses less digits than its factorization.

653430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 653430 is about 808.3501716459. The cubic root of 653430 is about 86.7760125410.

Adding to 653430 its reverse (34356), we get a palindrome (687786).

The spelling of 653430 in words is "six hundred fifty-three thousand, four hundred thirty".