663055 has 4 divisors (see below), whose sum is σ = 795672. Its totient is φ = 530440.

The previous prime is 663053. The next prime is 663071. The reversal of 663055 is 550366.

663055 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, and also an emirpimes, since its reverse is a distinct semiprime: 550366 = 2 ⋅275183.

It is not a de Polignac number, because 663055 - 2¹ = 663053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663053) 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, 66301 + ... + 66310.

It is an arithmetic number, because the mean of its divisors is an integer number (198918).

2⁶⁶³⁰⁵⁵ is an apocalyptic number.

663055 is a deficient number, since it is larger than the sum of its proper divisors (132617).

663055 is a wasteful number, since it uses less digits than its factorization.

663055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132616.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 663055 is about 814.2818922216. The cubic root of 663055 is about 87.2000066633.

The spelling of 663055 in words is "six hundred sixty-three thousand, fifty-five".