685029744 has 80 divisors (see below), whose sum is σ = 2247197440. Its totient is φ = 195721920.

The previous prime is 685029731. The next prime is 685029749. The reversal of 685029744 is 447920586.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 685029744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685029749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110242 + ... + 116289.

It is an arithmetic number, because the mean of its divisors is an integer number (28089968).

Almost surely, 2^685029744 is an apocalyptic number.

It is an amenable number.

685029744 is an abundant number, since it is smaller than the sum of its proper divisors (1562167696).

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

685029744 is a wasteful number, since it uses less digits than its factorization.

685029744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226555 (or 226543 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 685029744 is about 26173.0728803478. The cubic root of 685029744 is about 881.5287407969.

The spelling of 685029744 in words is "six hundred eighty-five million, twenty-nine thousand, seven hundred forty-four".