634810423 has 4 divisors (see below), whose sum is σ = 683642008. Its totient is φ = 585978840.

The previous prime is 634810417. The next prime is 634810439. The reversal of 634810423 is 324018436.

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

It is a cyclic number.

It is not a de Polignac number, because 634810423 - 2⁵ = 634810391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634810403) 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, 24415773 + ... + 24415798.

It is an arithmetic number, because the mean of its divisors is an integer number (170910502).

Almost surely, 2^634810423 is an apocalyptic number.

634810423 is a deficient number, since it is larger than the sum of its proper divisors (48831585).

634810423 is a wasteful number, since it uses less digits than its factorization.

634810423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48831584.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 634810423 is about 25195.4444890341. Note that the first 4 decimals coincide. The cubic root of 634810423 is about 859.4382589916.

Adding to 634810423 its reverse (324018436), we get a palindrome (958828859).

The spelling of 634810423 in words is "six hundred thirty-four million, eight hundred ten thousand, four hundred twenty-three".