684724052107 has 8 divisors (see below), whose sum is σ = 687175077680. Its totient is φ = 682277385600.

The previous prime is 684724052101. The next prime is 684724052141. The reversal of 684724052107 is 701250427486.

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

It is a cyclic number.

It is not a de Polignac number, because 684724052107 - 2³ = 684724052099 is a prime.

It is a super-2 number, since 2×684724052107² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684724052101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774882 + ... + 1403527.

It is an arithmetic number, because the mean of its divisors is an integer number (85896884710).

Almost surely, 2^684724052107 is an apocalyptic number.

684724052107 is a deficient number, since it is larger than the sum of its proper divisors (2451025573).

684724052107 is a wasteful number, since it uses less digits than its factorization.

684724052107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179533.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 684724052107 in words is "six hundred eighty-four billion, seven hundred twenty-four million, fifty-two thousand, one hundred seven".