685335527720 has 32 divisors (see below), whose sum is σ = 1551465105120. Its totient is φ = 272452403520.

The previous prime is 685335527719. The next prime is 685335527753. The reversal of 685335527720 is 27725533586.

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, 52549886 + ... + 52562925.

It is an arithmetic number, because the mean of its divisors is an integer number (48483284535).

Almost surely, 2^685335527720 is an apocalyptic number.

It is an amenable number.

685335527720 is an abundant number, since it is smaller than the sum of its proper divisors (866129577400).

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

685335527720 is a wasteful number, since it uses less digits than its factorization.

685335527720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105112985 (or 105112981 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 53.

The spelling of 685335527720 in words is "six hundred eighty-five billion, three hundred thirty-five million, five hundred twenty-seven thousand, seven hundred twenty".