634243005 has 48 divisors (see below), whose sum is σ = 1206092160. Its totient is φ = 305769600.

The previous prime is 634242977. The next prime is 634243019. The reversal of 634243005 is 500342436.

634243005 is a `hidden beast` number, since 634 + 24 + 3 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 634243005 - 2⁷ = 634242877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634243005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86056 + ... + 93134.

It is an arithmetic number, because the mean of its divisors is an integer number (25126920).

Almost surely, 2^634243005 is an apocalyptic number.

It is an amenable number.

634243005 is a deficient number, since it is larger than the sum of its proper divisors (571849155).

634243005 is a wasteful number, since it uses less digits than its factorization.

634243005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282 (or 7279 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 634243005 is about 25184.1816424517. The cubic root of 634243005 is about 859.1821163233.

The spelling of 634243005 in words is "six hundred thirty-four million, two hundred forty-three thousand, five".