685532306352 has 90 divisors (see below), whose sum is σ = 1786911760164. Its totient is φ = 226470545280.

The previous prime is 685532306339. The next prime is 685532306353. The reversal of 685532306352 is 253603235586.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (685532306353) 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 17 ways as a sum of consecutive naturals, for example, 728514202 + ... + 728515142.

Almost surely, 2^685532306352 is an apocalyptic number.

It is an amenable number.

685532306352 is an abundant number, since it is smaller than the sum of its proper divisors (1101379453812).

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

685532306352 is an frugal number, since it uses more digits than its factorization.

685532306352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 48.

Multiplying 685532306352 by its sum of digits (48), we get a square (32905550704896 = 5736336²).

685532306352 divided by its sum of digits (48) gives a square (14281923049 = 119507²).

The spelling of 685532306352 in words is "six hundred eighty-five billion, five hundred thirty-two million, three hundred six thousand, three hundred fifty-two".