6403716 has 72 divisors (see below), whose sum is σ = 17943744. Its totient is φ = 1909440.

The previous prime is 6403711. The next prime is 6403723. The reversal of 6403716 is 6173046.

6403716 is a `hidden beast` number, since 640 + 3 + 7 + 16 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6403716.

It is not an unprimeable number, because it can be changed into a prime (6403711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40710 + ... + 40866.

Almost surely, 2^6403716 is an apocalyptic number.

6403716 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6403716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8971872).

6403716 is an abundant number, since it is smaller than the sum of its proper divisors (11540028).

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

6403716 is a wasteful number, since it uses less digits than its factorization.

6403716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 276 counting only the distinct ones).

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

The square root of 6403716 is about 2530.5564605438. The cubic root of 6403716 is about 185.6994800257.

It can be divided in two parts, 640 and 3716, that added together give a square (4356 = 66²).

The spelling of 6403716 in words is "six million, four hundred three thousand, seven hundred sixteen".