684834535634 has 8 divisors (see below), whose sum is σ = 1027635543948. Its totient is φ = 342289354320.

The previous prime is 684834535631. The next prime is 684834535691. The reversal of 684834535634 is 436535438486.

It can be written as a sum of positive squares in 2 ways, for example, as 403101819409 + 281732716225 = 634903^2 + 530785^2 .

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

It is not an unprimeable number, because it can be changed into a prime (684834535631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63950057 + ... + 63960764.

Almost surely, 2^684834535634 is an apocalyptic number.

684834535634 is a deficient number, since it is larger than the sum of its proper divisors (342801008314).

684834535634 is a wasteful number, since it uses less digits than its factorization.

684834535634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127913500.

The product of its digits is 99532800, while the sum is 59.

The spelling of 684834535634 in words is "six hundred eighty-four billion, eight hundred thirty-four million, five hundred thirty-five thousand, six hundred thirty-four".