634650873 has 4 divisors (see below), whose sum is σ = 846201168. Its totient is φ = 423100580.

The previous prime is 634650871. The next prime is 634650911. The reversal of 634650873 is 378056436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634650873 - 2¹ = 634650871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634650871) 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 3 ways as a sum of consecutive naturals, for example, 105775143 + ... + 105775148.

It is an arithmetic number, because the mean of its divisors is an integer number (211550292).

Almost surely, 2^634650873 is an apocalyptic number.

It is an amenable number.

634650873 is a deficient number, since it is larger than the sum of its proper divisors (211550295).

634650873 is a wasteful number, since it uses less digits than its factorization.

634650873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211550294.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 634650873 is about 25192.2780430830. The cubic root of 634650873 is about 859.3662506887.

The spelling of 634650873 in words is "six hundred thirty-four million, six hundred fifty thousand, eight hundred seventy-three".