634432361 has 4 divisors (see below), whose sum is σ = 635679300. Its totient is φ = 633185424.

The previous prime is 634432321. The next prime is 634432373. The reversal of 634432361 is 163234436.

634432361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208629136 + 425803225 = 14444^2 + 20635^2 .

It is a cyclic number.

It is not a de Polignac number, because 634432361 - 2⁶ = 634432297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634432301) 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, 622706 + ... + 623723.

It is an arithmetic number, because the mean of its divisors is an integer number (158919825).

Almost surely, 2^634432361 is an apocalyptic number.

It is an amenable number.

634432361 is a deficient number, since it is larger than the sum of its proper divisors (1246939).

634432361 is a wasteful number, since it uses less digits than its factorization.

634432361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246938.

The product of its digits is 31104, while the sum is 32.

The square root of 634432361 is about 25187.9407852250. The cubic root of 634432361 is about 859.2676119979.

Adding to 634432361 its reverse (163234436), we get a palindrome (797666797).

The spelling of 634432361 in words is "six hundred thirty-four million, four hundred thirty-two thousand, three hundred sixty-one".