684005050605 has 16 divisors (see below), whose sum is σ = 1094456332800. Its totient is φ = 364786609728.

The previous prime is 684005050601. The next prime is 684005050607. The reversal of 684005050605 is 506050500486.

684005050605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 684005050605 - 2² = 684005050601 is a prime.

It is a super-2 number, since 2×684005050605² (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 (684005050601) 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, 649630 + ... + 1337919.

It is an arithmetic number, because the mean of its divisors is an integer number (68403520800).

Almost surely, 2^684005050605 is an apocalyptic number.

It is an amenable number.

684005050605 is a deficient number, since it is larger than the sum of its proper divisors (410451282195).

684005050605 is a wasteful number, since it uses less digits than its factorization.

684005050605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010500.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 684005050605 in words is "six hundred eighty-four billion, five million, fifty thousand, six hundred five".