660430 has 16 divisors (see below), whose sum is σ = 1198224. Its totient is φ = 262080.

The previous prime is 660409. The next prime is 660449. The reversal of 660430 is 34066.

It is a happy number.

660430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 660398 and 660407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954 + ... + 2266.

It is an arithmetic number, because the mean of its divisors is an integer number (74889).

2⁶⁶⁰⁴³⁰ is an apocalyptic number.

660430 is a deficient number, since it is larger than the sum of its proper divisors (537794).

660430 is a wasteful number, since it uses less digits than its factorization.

660430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

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

The square root of 660430 is about 812.6684440779. The cubic root of 660430 is about 87.0847810529.

Adding to 660430 its reverse (34066), we get a palindrome (694496).

The spelling of 660430 in words is "six hundred sixty thousand, four hundred thirty".