634887841 has 8 divisors (see below), whose sum is σ = 726545664. Its totient is φ = 543469920.

The previous prime is 634887821. The next prime is 634887863. The reversal of 634887841 is 148788436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 634887841 - 2¹⁵ = 634855073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634887811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54265 + ... + 64918.

It is an arithmetic number, because the mean of its divisors is an integer number (90818208).

Almost surely, 2^634887841 is an apocalyptic number.

It is an amenable number.

634887841 is a deficient number, since it is larger than the sum of its proper divisors (91657823).

634887841 is a wasteful number, since it uses less digits than its factorization.

634887841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119951.

The product of its digits is 1032192, while the sum is 49.

The square root of 634887841 is about 25196.9807913567. The cubic root of 634887841 is about 859.4731950314.

The spelling of 634887841 in words is "six hundred thirty-four million, eight hundred eighty-seven thousand, eight hundred forty-one".