634607742 has 16 divisors (see below), whose sum is σ = 1269493632. Its totient is φ = 211489560.

The previous prime is 634607639. The next prime is 634607747. The reversal of 634607742 is 247706436.

It is a self number, because there is not a number n which added to its sum of digits gives 634607742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634607747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29017 + ... + 45947.

It is an arithmetic number, because the mean of its divisors is an integer number (79343352).

Almost surely, 2^634607742 is an apocalyptic number.

634607742 is an abundant number, since it is smaller than the sum of its proper divisors (634885890).

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

634607742 is a wasteful number, since it uses less digits than its factorization.

634607742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23183.

The product of its (nonzero) digits is 169344, while the sum is 39.

The square root of 634607742 is about 25191.4219924164. The cubic root of 634607742 is about 859.3467826803.

The spelling of 634607742 in words is "six hundred thirty-four million, six hundred seven thousand, seven hundred forty-two".