663416 has 16 divisors (see below), whose sum is σ = 1339800. Its totient is φ = 306144.

The previous prime is 663409. The next prime is 663437. The reversal of 663416 is 614366.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

663416 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3086 + ... + 3293.

2⁶⁶³⁴¹⁶ is an apocalyptic number.

It is an amenable number.

663416 is an abundant number, since it is smaller than the sum of its proper divisors (676384).

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

663416 is a wasteful number, since it uses less digits than its factorization.

663416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6398 (or 6394 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 663416 is about 814.5035297652. The cubic root of 663416 is about 87.2158291271.

It can be divided in two parts, 66 and 3416, that multiplied together give a triangular number (225456 = T₆₇₁).

The spelling of 663416 in words is "six hundred sixty-three thousand, four hundred sixteen".