634666436 has 12 divisors (see below), whose sum is σ = 1110943680. Its totient is φ = 317253960.

The previous prime is 634666433. The next prime is 634666463.

It is a happy number.

634666436 is nontrivially palindromic in base 10.

634666436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (634666433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521 + ... + 35631.

It is an arithmetic number, because the mean of its divisors is an integer number (92578640).

Almost surely, 2^634666436 is an apocalyptic number.

It is an amenable number.

634666436 is a deficient number, since it is larger than the sum of its proper divisors (476277244).

634666436 is a wasteful number, since it uses less digits than its factorization.

634666436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39634 (or 39632 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 44.

The square root of 634666436 is about 25192.5869255224. The cubic root of 634666436 is about 859.3732751322.

The spelling of 634666436 in words is "six hundred thirty-four million, six hundred sixty-six thousand, four hundred thirty-six".