634400206 has 16 divisors (see below), whose sum is σ = 1042425648. Its totient is φ = 287164800.

The previous prime is 634400167. The next prime is 634400209. The reversal of 634400206 is 602004436.

634400206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634400209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54525 + ... + 65128.

It is an arithmetic number, because the mean of its divisors is an integer number (65151603).

Almost surely, 2^634400206 is an apocalyptic number.

634400206 is a deficient number, since it is larger than the sum of its proper divisors (408025442).

634400206 is a wasteful number, since it uses less digits than its factorization.

634400206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119907.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 634400206 is about 25187.3024756523. The cubic root of 634400206 is about 859.2530949700.

The spelling of 634400206 in words is "six hundred thirty-four million, four hundred thousand, two hundred six".