634090 has 8 divisors (see below), whose sum is σ = 1141380. Its totient is φ = 253632.

The previous prime is 634079. The next prime is 634091. The reversal of 634090 is 90436.

It can be written as a sum of positive squares in 2 ways, for example, as 567009 + 67081 = 753^2 + 259^2 .

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

It is not an unprimeable number, because it can be changed into a prime (634091) 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, 31695 + ... + 31714.

2⁶³⁴⁰⁹⁰ is an apocalyptic number.

634090 is a deficient number, since it is larger than the sum of its proper divisors (507290).

634090 is a wasteful number, since it uses less digits than its factorization.

634090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63416.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 634090 is about 796.2976830307. The cubic root of 634090 is about 85.9113020971.

The spelling of 634090 in words is "six hundred thirty-four thousand, ninety".