634209485 has 32 divisors (see below), whose sum is σ = 939305472. Its totient is φ = 400308480.

The previous prime is 634209427. The next prime is 634209487. The reversal of 634209485 is 584902436.

634209485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634209485 - 2⁸ = 634209229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634209487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178880 + ... + 182390.

It is an arithmetic number, because the mean of its divisors is an integer number (29353296).

Almost surely, 2^634209485 is an apocalyptic number.

634209485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

634209485 is a deficient number, since it is larger than the sum of its proper divisors (305095987).

634209485 is a wasteful number, since it uses less digits than its factorization.

634209485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 634209485 is about 25183.5161365525. The cubic root of 634209485 is about 859.1669800156.

The spelling of 634209485 in words is "six hundred thirty-four million, two hundred nine thousand, four hundred eighty-five".