634334401 has 4 divisors (see below), whose sum is σ = 651478612. Its totient is φ = 617190192.

The previous prime is 634334387. The next prime is 634334443. The reversal of 634334401 is 104433436.

634334401 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 564110001 + 70224400 = 23751^2 + 8380^2 .

It is a de Polignac number, because none of the positive numbers 2^k-634334401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634334401.

It is not an unprimeable number, because it can be changed into a prime (634334471) 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, 8572050 + ... + 8572123.

It is an arithmetic number, because the mean of its divisors is an integer number (162869653).

Almost surely, 2^634334401 is an apocalyptic number.

It is an amenable number.

634334401 is a deficient number, since it is larger than the sum of its proper divisors (17144211).

634334401 is a wasteful number, since it uses less digits than its factorization.

634334401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17144210.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 634334401 is about 25185.9961288014. The cubic root of 634334401 is about 859.2233844369.

Adding to 634334401 its reverse (104433436), we get a palindrome (738767837).

The spelling of 634334401 in words is "six hundred thirty-four million, three hundred thirty-four thousand, four hundred one".