684648062842 has 16 divisors (see below), whose sum is σ = 1060128324864. Its totient is φ = 331272540000.

The previous prime is 684648062779. The next prime is 684648062843. The reversal of 684648062842 is 248260846486.

It is a happy number.

It is a super-2 number, since 2×684648062842² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (684648062843) 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, 2634342 + ... + 2882542.

It is an arithmetic number, because the mean of its divisors is an integer number (66258020304).

Almost surely, 2^684648062842 is an apocalyptic number.

684648062842 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

684648062842 is a deficient number, since it is larger than the sum of its proper divisors (375480262022).

684648062842 is a wasteful number, since it uses less digits than its factorization.

684648062842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292725.

The product of its (nonzero) digits is 28311552, while the sum is 58.

The spelling of 684648062842 in words is "six hundred eighty-four billion, six hundred forty-eight million, sixty-two thousand, eight hundred forty-two".