682685297920 has 36 divisors (see below), whose sum is σ = 1635244630740. Its totient is φ = 273074118656.

The previous prime is 682685297891. The next prime is 682685297923. The reversal of 682685297920 is 29792586286.

It can be written as a sum of positive squares in 2 ways, for example, as 274190471424 + 408494826496 = 523632^2 + 639136^2 .

It is a super-2 number, since 2×682685297920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682685297923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266672665 + ... + 266675224.

It is an arithmetic number, because the mean of its divisors is an integer number (45423461965).

Almost surely, 2^682685297920 is an apocalyptic number.

It is an amenable number.

682685297920 is an abundant number, since it is smaller than the sum of its proper divisors (952559332820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

682685297920 is an equidigital number, since it uses as much as digits as its factorization.

682685297920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533347910 (or 533347896 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 682685297920 in words is "six hundred eighty-two billion, six hundred eighty-five million, two hundred ninety-seven thousand, nine hundred twenty".