647416 has 32 divisors (see below), whose sum is σ = 1514880. Its totient is φ = 252000.

The previous prime is 647401. The next prime is 647417. The reversal of 647416 is 614746.

647416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91 + ... + 1141.

It is an arithmetic number, because the mean of its divisors is an integer number (47340).

2⁶⁴⁷⁴¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757440).

647416 is an abundant number, since it is smaller than the sum of its proper divisors (867464).

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

647416 is a wasteful number, since it uses less digits than its factorization.

647416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1071 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 647416 is about 804.6216502183. The cubic root of 647416 is about 86.5089703016.

The spelling of 647416 in words is "six hundred forty-seven thousand, four hundred sixteen".