664096 has 12 divisors (see below), whose sum is σ = 1307502. Its totient is φ = 332032.

The previous prime is 664091. The next prime is 664099. The reversal of 664096 is 690466.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 55696 = 780^2 + 236^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (664091) by changing a digit.

664096 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 10345 + ... + 10408.

2⁶⁶⁴⁰⁹⁶ is an apocalyptic number.

It is an amenable number.

664096 is a deficient number, since it is larger than the sum of its proper divisors (643406).

664096 is a wasteful number, since it uses less digits than its factorization.

664096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763 (or 20755 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 664096 is about 814.9208550528. The cubic root of 664096 is about 87.2456176320.

The spelling of 664096 in words is "six hundred sixty-four thousand, ninety-six".