684240828707 has 6 divisors (see below), whose sum is σ = 707025123684. Its totient is φ = 662168542980.

The previous prime is 684240828697. The next prime is 684240828737. The reversal of 684240828707 is 707828042486.

It is not a de Polignac number, because 684240828707 - 2¹² = 684240824611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684240828737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 356003633 + ... + 356005554.

It is an arithmetic number, because the mean of its divisors is an integer number (117837520614).

Almost surely, 2^684240828707 is an apocalyptic number.

684240828707 is a deficient number, since it is larger than the sum of its proper divisors (22784294977).

684240828707 is an equidigital number, since it uses as much as digits as its factorization.

684240828707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712009249 (or 712009218 counting only the distinct ones).

The product of its (nonzero) digits is 9633792, while the sum is 56.

The spelling of 684240828707 in words is "six hundred eighty-four billion, two hundred forty million, eight hundred twenty-eight thousand, seven hundred seven".