684646402115 has 8 divisors (see below), whose sum is σ = 884773812048. Its totient is φ = 505585035360.

The previous prime is 684646402051. The next prime is 684646402123. The reversal of 684646402115 is 511204646486.

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

It is not a de Polignac number, because 684646402115 - 2⁶ = 684646402051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 684646402115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5266510721 + ... + 5266510850.

It is an arithmetic number, because the mean of its divisors is an integer number (110596726506).

Almost surely, 2^684646402115 is an apocalyptic number.

684646402115 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

684646402115 is a deficient number, since it is larger than the sum of its proper divisors (200127409933).

684646402115 is a wasteful number, since it uses less digits than its factorization.

684646402115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10533021589.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 684646402115 in words is "six hundred eighty-four billion, six hundred forty-six million, four hundred two thousand, one hundred fifteen".