634405101 has 16 divisors (see below), whose sum is σ = 944232960. Its totient is φ = 375545520.

The previous prime is 634405081. The next prime is 634405103. The reversal of 634405101 is 101504436.

It is not a de Polignac number, because 634405101 - 2⁵ = 634405069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634405103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222121 + ... + 224958.

It is an arithmetic number, because the mean of its divisors is an integer number (59014560).

Almost surely, 2^634405101 is an apocalyptic number.

It is an amenable number.

634405101 is a deficient number, since it is larger than the sum of its proper divisors (309827859).

634405101 is a wasteful number, since it uses less digits than its factorization.

634405101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447136.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 634405101 is about 25187.3996474428. The cubic root of 634405101 is about 859.2553049489.

Adding to 634405101 its reverse (101504436), we get a palindrome (735909537).

The spelling of 634405101 in words is "six hundred thirty-four million, four hundred five thousand, one hundred one".