660063 has 4 divisors (see below), whose sum is σ = 880088. Its totient is φ = 440040.

The previous prime is 660061. The next prime is 660067. The reversal of 660063 is 360066.

660063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 660063 - 2¹ = 660061 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660061) 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, 110008 + ... + 110013.

It is an arithmetic number, because the mean of its divisors is an integer number (220022).

2⁶⁶⁰⁰⁶³ is an apocalyptic number.

660063 is a deficient number, since it is larger than the sum of its proper divisors (220025).

660063 is a wasteful number, since it uses less digits than its factorization.

660063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220024.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 660063 is about 812.4426133580. The cubic root of 660063 is about 87.0686471015.

The spelling of 660063 in words is "six hundred sixty thousand, sixty-three".