685830322801 has 32 divisors (see below), whose sum is σ = 812878295040. Its totient is φ = 572535273024.

The previous prime is 685830322739. The next prime is 685830322819. The reversal of 685830322801 is 108223038586.

685830322801 = 47744² + 47745² + ... + 48042².

It is a happy number.

It is not a de Polignac number, because 685830322801 - 2³¹ = 683682839153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685830322841) 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 31 ways as a sum of consecutive naturals, for example, 2737540 + ... + 2977546.

It is an arithmetic number, because the mean of its divisors is an integer number (25402446720).

Almost surely, 2^685830322801 is an apocalyptic number.

It is an amenable number.

685830322801 is a deficient number, since it is larger than the sum of its proper divisors (127047972239).

685830322801 is a wasteful number, since it uses less digits than its factorization.

685830322801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240565.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 685830322801 in words is "six hundred eighty-five billion, eight hundred thirty million, three hundred twenty-two thousand, eight hundred one".