634724 has 12 divisors (see below), whose sum is σ = 1121904. Its totient is φ = 314184.

The previous prime is 634717. The next prime is 634727. The reversal of 634724 is 427436.

It is a happy number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 634693 and 634702.

It is not an unprimeable number, because it can be changed into a prime (634727) by changing a digit.

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, 314 + ... + 1169.

It is an arithmetic number, because the mean of its divisors is an integer number (93492).

2⁶³⁴⁷²⁴ is an apocalyptic number.

It is an amenable number.

634724 is a deficient number, since it is larger than the sum of its proper divisors (487180).

634724 is a wasteful number, since it uses less digits than its factorization.

634724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1592 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 634724 is about 796.6956759014. The cubic root of 634724 is about 85.9399255954.

The spelling of 634724 in words is "six hundred thirty-four thousand, seven hundred twenty-four".