634938 has 32 divisors (see below), whose sum is σ = 1368576. Its totient is φ = 195888.

The previous prime is 634937. The next prime is 634939. The reversal of 634938 is 839436.

It is an interprime number because it is at equal distance from previous prime (634937) and next prime (634939).

It is a junction number, because it is equal to n+sod(n) for n = 634899 and 634908.

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 15 ways as a sum of consecutive naturals, for example, 5881 + ... + 5987.

It is an arithmetic number, because the mean of its divisors is an integer number (42768).

2⁶³⁴⁹³⁸ is an apocalyptic number.

634938 is an abundant number, since it is smaller than the sum of its proper divisors (733638).

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

634938 is a wasteful number, since it uses less digits than its factorization.

634938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its digits is 15552, while the sum is 33.

The square root of 634938 is about 796.8299693159. The cubic root of 634938 is about 85.9495828520.

It can be divided in two parts, 6 and 34938, that multiplied together give a triangular number (209628 = T₆₄₇).

The spelling of 634938 in words is "six hundred thirty-four thousand, nine hundred thirty-eight".