663069 has 16 divisors (see below), whose sum is σ = 981504. Its totient is φ = 394800.

The previous prime is 663053. The next prime is 663071. The reversal of 663069 is 960366.

663069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663069 - 2⁴ = 663053 is a prime.

It is a super-2 number, since 2×663069² = 879320997522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202 + ... + 2484.

It is an arithmetic number, because the mean of its divisors is an integer number (61344).

2⁶⁶³⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

663069 is a deficient number, since it is larger than the sum of its proper divisors (318435).

663069 is a wasteful number, since it uses less digits than its factorization.

663069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 663069 is about 814.2904887078. The cubic root of 663069 is about 87.2006203839.

The spelling of 663069 in words is "six hundred sixty-three thousand, sixty-nine".