426663 has 6 divisors (see below), whose sum is σ = 616304. Its totient is φ = 284436.

The previous prime is 426661. The next prime is 426691. The reversal of 426663 is 366624.

It is not a de Polignac number, because 426663 - 2¹ = 426661 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23695 + ... + 23712.

2⁴²⁶⁶⁶³ is an apocalyptic number.

426663 is a deficient number, since it is larger than the sum of its proper divisors (189641).

426663 is a wasteful number, since it uses less digits than its factorization.

426663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47413 (or 47410 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 426663 is about 653.1944580292. The cubic root of 426663 is about 75.2826666558.

It can be divided in two parts, 426 and 663, that added together give a square (1089 = 33²).

The spelling of 426663 in words is "four hundred twenty-six thousand, six hundred sixty-three".