634650 has 24 divisors (see below), whose sum is σ = 1574304. Its totient is φ = 169200.

The previous prime is 634649. The next prime is 634651. The reversal of 634650 is 56436.

It is an interprime number because it is at equal distance from previous prime (634649) and next prime (634651).

It is a self number, because there is not a number n which added to its sum of digits gives 634650.

It is not an unprimeable number, because it can be changed into a prime (634651) 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 11 ways as a sum of consecutive naturals, for example, 1966 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (65596).

2⁶³⁴⁶⁵⁰ is an apocalyptic number.

634650 is an abundant number, since it is smaller than the sum of its proper divisors (939654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634650 is a wasteful number, since it uses less digits than its factorization.

634650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246 (or 4241 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 634650 is about 796.6492327242. The cubic root of 634650 is about 85.9365856652.

The spelling of 634650 in words is "six hundred thirty-four thousand, six hundred fifty".