634930 has 8 divisors (see below), whose sum is σ = 1142892. Its totient is φ = 253968.

The previous prime is 634927. The next prime is 634937. The reversal of 634930 is 39436.

It can be written as a sum of positive squares in 2 ways, for example, as 549081 + 85849 = 741^2 + 293^2 .

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

It is a super-2 number, since 2×634930² = 806272209800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634895 and 634904.

It is not an unprimeable number, because it can be changed into a prime (634937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31737 + ... + 31756.

2⁶³⁴⁹³⁰ is an apocalyptic number.

634930 is a deficient number, since it is larger than the sum of its proper divisors (507962).

634930 is a wasteful number, since it uses less digits than its factorization.

634930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63500.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 634930 is about 796.8249494086. The cubic root of 634930 is about 85.9492218721.

The spelling of 634930 in words is "six hundred thirty-four thousand, nine hundred thirty".