634746 has 48 divisors (see below), whose sum is σ = 1575936. Its totient is φ = 169344.

The previous prime is 634741. The next prime is 634747. The reversal of 634746 is 647436.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (634741) by changing a digit.

634746 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4935 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (32832).

2⁶³⁴⁷⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787968).

634746 is an abundant number, since it is smaller than the sum of its proper divisors (941190).

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

634746 is a wasteful number, since it uses less digits than its factorization.

634746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 156 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 634746 is about 796.7094828104. The cubic root of 634746 is about 85.9409184976.

The spelling of 634746 in words is "six hundred thirty-four thousand, seven hundred forty-six".