634996 has 6 divisors (see below), whose sum is σ = 1111250. Its totient is φ = 317496.

The previous prime is 634979. The next prime is 635003. The reversal of 634996 is 699436.

It can be written as a sum of positive squares in only one way, i.e., 343396 + 291600 = 586^2 + 540^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79371 + ... + 79378.

2⁶³⁴⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

634996 is a deficient number, since it is larger than the sum of its proper divisors (476254).

634996 is a wasteful number, since it uses less digits than its factorization.

634996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158753 (or 158751 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 634996 is about 796.8663626983. The cubic root of 634996 is about 85.9521998656.

The spelling of 634996 in words is "six hundred thirty-four thousand, nine hundred ninety-six".