684937356441 has 16 divisors (see below), whose sum is σ = 993048341376. Its totient is φ = 417407677056.

The previous prime is 684937356407. The next prime is 684937356443. The reversal of 684937356441 is 144653739486.

It is not a de Polignac number, because 684937356441 - 2²⁷ = 684803138713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (684937356443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85250820 + ... + 85258853.

It is an arithmetic number, because the mean of its divisors is an integer number (62065521336).

Almost surely, 2^684937356441 is an apocalyptic number.

It is an amenable number.

684937356441 is a deficient number, since it is larger than the sum of its proper divisors (308110984935).

684937356441 is a wasteful number, since it uses less digits than its factorization.

684937356441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170509792.

The product of its digits is 52254720, while the sum is 60.

The spelling of 684937356441 in words is "six hundred eighty-four billion, nine hundred thirty-seven million, three hundred fifty-six thousand, four hundred forty-one".