663453 has 12 divisors (see below), whose sum is σ = 1095328. Its totient is φ = 379080.

The previous prime is 663437. The next prime is 663463. The reversal of 663453 is 354366.

663453 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663453 - 2⁴ = 663437 is a prime.

It is a Duffinian number.

663453 is strictly pandigital in base 7.

663453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5203 + ... + 5328.

2⁶⁶³⁴⁵³ is an apocalyptic number.

663453 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

663453 is a deficient number, since it is larger than the sum of its proper divisors (431875).

663453 is a wasteful number, since it uses less digits than its factorization.

663453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10544 (or 10541 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 663453 is about 814.5262426712. The cubic root of 663453 is about 87.2174504957.

The spelling of 663453 in words is "six hundred sixty-three thousand, four hundred fifty-three".