655430 has 8 divisors (see below), whose sum is σ = 1179792. Its totient is φ = 262168.

The previous prime is 655399. The next prime is 655439. The reversal of 655430 is 34556.

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

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 655396 and 655405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32762 + ... + 32781.

It is an arithmetic number, because the mean of its divisors is an integer number (147474).

2⁶⁵⁵⁴³⁰ is an apocalyptic number.

655430 is a deficient number, since it is larger than the sum of its proper divisors (524362).

655430 is a wasteful number, since it uses less digits than its factorization.

655430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65550.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 655430 is about 809.5863141136. The cubic root of 655430 is about 86.8644562191.

Adding to 655430 its reverse (34556), we get a palindrome (689986).

The spelling of 655430 in words is "six hundred fifty-five thousand, four hundred thirty".