634530005 has 16 divisors (see below), whose sum is σ = 788471280. Its totient is φ = 489635328.

The previous prime is 634529993. The next prime is 634530019. The reversal of 634530005 is 500035436.

It can be written as a sum of positive squares in 8 ways, for example, as 70324996 + 564205009 = 8386^2 + 23753^2 .

It is a cyclic number.

It is not a de Polignac number, because 634530005 - 2¹⁶ = 634464469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232529 + ... + 235241.

It is an arithmetic number, because the mean of its divisors is an integer number (49279455).

Almost surely, 2^634530005 is an apocalyptic number.

It is an amenable number.

634530005 is a deficient number, since it is larger than the sum of its proper divisors (153941275).

634530005 is a wasteful number, since it uses less digits than its factorization.

634530005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 634530005 is about 25189.8790191616. The cubic root of 634530005 is about 859.3116923590.

The spelling of 634530005 in words is "six hundred thirty-four million, five hundred thirty thousand, five".