685220700590 has 32 divisors (see below), whose sum is σ = 1262168455680. Its totient is φ = 267695565984.

The previous prime is 685220700589. The next prime is 685220700607. The reversal of 685220700590 is 95007022586.

685220700590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7283471 + ... + 7376949.

It is an arithmetic number, because the mean of its divisors is an integer number (39442764240).

Almost surely, 2^685220700590 is an apocalyptic number.

685220700590 is a deficient number, since it is larger than the sum of its proper divisors (576947755090).

685220700590 is a wasteful number, since it uses less digits than its factorization.

685220700590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110576.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 685220700590 in words is "six hundred eighty-five billion, two hundred twenty million, seven hundred thousand, five hundred ninety".