664130 has 8 divisors (see below), whose sum is σ = 1195452. Its totient is φ = 265648.

The previous prime is 664123. The next prime is 664133. The reversal of 664130 is 31466.

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 19321 = 803^2 + 139^2 .

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

It is not an unprimeable number, because it can be changed into a prime (664133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33197 + ... + 33216.

2⁶⁶⁴¹³⁰ is an apocalyptic number.

664130 is a deficient number, since it is larger than the sum of its proper divisors (531322).

664130 is a wasteful number, since it uses less digits than its factorization.

664130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66420.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 664130 is about 814.9417157073. The cubic root of 664130 is about 87.2471065233.

Adding to 664130 its reverse (31466), we get a palindrome (695596).

It can be divided in two parts, 664 and 130, that multiplied together give a triangular number (86320 = T₄₁₅).

The spelling of 664130 in words is "six hundred sixty-four thousand, one hundred thirty".