663064 has 8 divisors (see below), whose sum is σ = 1243260. Its totient is φ = 331528.

The previous prime is 663053. The next prime is 663071. The reversal of 663064 is 460366.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

663064 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 as a sum of consecutive naturals, namely, 41434 + ... + 41449.

2⁶⁶³⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

663064 is a deficient number, since it is larger than the sum of its proper divisors (580196).

663064 is a wasteful number, since it uses less digits than its factorization.

663064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82889 (or 82885 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 663064 is about 814.2874185446. The cubic root of 663064 is about 87.2004011990.

The spelling of 663064 in words is "six hundred sixty-three thousand, sixty-four".