685110444 has 12 divisors (see below), whose sum is σ = 1598591064. Its totient is φ = 228370144.

The previous prime is 685110431. The next prime is 685110449. The reversal of 685110444 is 444011586.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (685110449) 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, 28546257 + ... + 28546280.

It is an arithmetic number, because the mean of its divisors is an integer number (133215922).

Almost surely, 2^685110444 is an apocalyptic number.

It is an amenable number.

685110444 is an abundant number, since it is smaller than the sum of its proper divisors (913480620).

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

685110444 is a wasteful number, since it uses less digits than its factorization.

685110444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57092544 (or 57092542 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 685110444 is about 26174.6144957285. The cubic root of 685110444 is about 881.5633556326.

The spelling of 685110444 in words is "six hundred eighty-five million, one hundred ten thousand, four hundred forty-four".