634730 has 8 divisors (see below), whose sum is σ = 1142532. Its totient is φ = 253888.

The previous prime is 634727. The next prime is 634741. The reversal of 634730 is 37436.

It can be written as a sum of positive squares in 2 ways, for example, as 606841 + 27889 = 779^2 + 167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 634696 and 634705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31727 + ... + 31746.

2⁶³⁴⁷³⁰ is an apocalyptic number.

634730 is a deficient number, since it is larger than the sum of its proper divisors (507802).

634730 is a wasteful number, since it uses less digits than its factorization.

634730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63480.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 634730 is about 796.6994414458. The cubic root of 634730 is about 85.9401963892.

The spelling of 634730 in words is "six hundred thirty-four thousand, seven hundred thirty".