634716 has 36 divisors (see below), whose sum is σ = 1666392. Its totient is φ = 211248.

The previous prime is 634709. The next prime is 634717. The reversal of 634716 is 617436.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 634716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634717) by changing a digit.

634716 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 646 + ... + 1298.

2⁶³⁴⁷¹⁶ 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 634716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833196).

634716 is an abundant number, since it is smaller than the sum of its proper divisors (1031676).

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

634716 is a wasteful number, since it uses less digits than its factorization.

634716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 658 counting only the distinct ones).

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

The square root of 634716 is about 796.6906551479. The cubic root of 634716 is about 85.9395645344.

The spelling of 634716 in words is "six hundred thirty-four thousand, seven hundred sixteen".