634516201 has 16 divisors (see below), whose sum is σ = 717543360. Its totient is φ = 555795520.

The previous prime is 634516199. The next prime is 634516231. The reversal of 634516201 is 102615436.

It is a cyclic number.

It is not a de Polignac number, because 634516201 - 2¹ = 634516199 is a prime.

It is a super-2 number, since 2×634516201² = 805221618662944802, which contains 22 as substring.

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 634516201.

It is not an unprimeable number, because it can be changed into a prime (634516231) 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 15 ways as a sum of consecutive naturals, for example, 177831 + ... + 181363.

It is an arithmetic number, because the mean of its divisors is an integer number (44846460).

Almost surely, 2^634516201 is an apocalyptic number.

It is an amenable number.

634516201 is a deficient number, since it is larger than the sum of its proper divisors (83027159).

634516201 is a wasteful number, since it uses less digits than its factorization.

634516201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 634516201 is about 25189.6050187374. The cubic root of 634516201 is about 859.3054609623.

The spelling of 634516201 in words is "six hundred thirty-four million, five hundred sixteen thousand, two hundred one".