634345847 has 16 divisors (see below), whose sum is σ = 657344160. Its totient is φ = 611786112.

The previous prime is 634345841. The next prime is 634345861. The reversal of 634345847 is 748543436.

It is not a de Polignac number, because 634345847 - 2²⁰ = 633297271 is a prime.

It is a super-2 number, since 2×634345847² = 804789307212294818, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634345798 and 634345807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634345841) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2000933 + ... + 2001249.

It is an arithmetic number, because the mean of its divisors is an integer number (41084010).

Almost surely, 2^634345847 is an apocalyptic number.

634345847 is a deficient number, since it is larger than the sum of its proper divisors (22998313).

634345847 is a wasteful number, since it uses less digits than its factorization.

634345847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802.

The product of its digits is 967680, while the sum is 44.

The square root of 634345847 is about 25186.2233572245. The cubic root of 634345847 is about 859.2285523797.

The spelling of 634345847 in words is "six hundred thirty-four million, three hundred forty-five thousand, eight hundred forty-seven".