634697337893 has 8 divisors (see below), whose sum is σ = 668289623520. Its totient is φ = 601123768560.

The previous prime is 634697337889. The next prime is 634697337983. The reversal of 634697337893 is 398733796436.

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

It is a cyclic number.

It is not a de Polignac number, because 634697337893 - 2² = 634697337889 is a prime.

It is a super-2 number, since 2×634697337893² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634697337193) 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 7 ways as a sum of consecutive naturals, for example, 4609430 + ... + 4745127.

It is an arithmetic number, because the mean of its divisors is an integer number (83536202940).

Almost surely, 2^634697337893 is an apocalyptic number.

It is an amenable number.

634697337893 is a deficient number, since it is larger than the sum of its proper divisors (33592285627).

634697337893 is a wasteful number, since it uses less digits than its factorization.

634697337893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9358147.

The product of its digits is 370355328, while the sum is 68.

The spelling of 634697337893 in words is "six hundred thirty-four billion, six hundred ninety-seven million, three hundred thirty-seven thousand, eight hundred ninety-three".