663714 has 40 divisors (see below), whose sum is σ = 1581228. Its totient is φ = 207360.

The previous prime is 663713. The next prime is 663737. The reversal of 663714 is 417366.

663714 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 50625 = 783^2 + 225^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663713) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2634 + ... + 2874.

2⁶⁶³⁷¹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790614).

663714 is an abundant number, since it is smaller than the sum of its proper divisors (917514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663714 is a wasteful number, since it uses less digits than its factorization.

663714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 263 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 663714 is about 814.6864427496. The cubic root of 663714 is about 87.2288860057.

The spelling of 663714 in words is "six hundred sixty-three thousand, seven hundred fourteen".