634354245 has 36 divisors (see below), whose sum is σ = 1279069740. Its totient is φ = 289989504.

The previous prime is 634354241. The next prime is 634354319. The reversal of 634354245 is 542453436.

634354245 is a `hidden beast` number, since 63 + 4 + 354 + 245 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 446307876 + 188046369 = 21126^2 + 13713^2 .

It is not a de Polignac number, because 634354245 - 2² = 634354241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634354241) 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 35 ways as a sum of consecutive naturals, for example, 141640 + ... + 146049.

It is an arithmetic number, because the mean of its divisors is an integer number (35529715).

Almost surely, 2^634354245 is an apocalyptic number.

It is an amenable number.

634354245 is an abundant number, since it is smaller than the sum of its proper divisors (644715495).

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

634354245 is a wasteful number, since it uses less digits than its factorization.

634354245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287714 (or 287704 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

The square root of 634354245 is about 25186.3900748003. The cubic root of 634354245 is about 859.2323440913.

The spelling of 634354245 in words is "six hundred thirty-four million, three hundred fifty-four thousand, two hundred forty-five".