663454 has 16 divisors (see below), whose sum is σ = 1108080. Its totient is φ = 295360.

The previous prime is 663437. The next prime is 663463. The reversal of 663454 is 454366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882 + ... + 1450.

It is an arithmetic number, because the mean of its divisors is an integer number (69255).

2⁶⁶³⁴⁵⁴ is an apocalyptic number.

663454 is a deficient number, since it is larger than the sum of its proper divisors (444626).

663454 is a wasteful number, since it uses less digits than its factorization.

663454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

The product of its digits is 8640, while the sum is 28.

The square root of 663454 is about 814.5268565247. The cubic root of 663454 is about 87.2174943157.

The spelling of 663454 in words is "six hundred sixty-three thousand, four hundred fifty-four".