1685712573 has 16 divisors (see below), whose sum is σ = 2605933440. Its totient is φ = 1074946752.

The previous prime is 1685712559. The next prime is 1685712629. The reversal of 1685712573 is 3752175861.

It is a happy number.

1685712573 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 71 + 2 + 573 = 666.

It is not a de Polignac number, because 1685712573 - 2¹⁰ = 1685711549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685712073) 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, 1356636 + ... + 1357877.

It is an arithmetic number, because the mean of its divisors is an integer number (162870840).

Almost surely, 2^1685712573 is an apocalyptic number.

It is an amenable number.

1685712573 is a deficient number, since it is larger than the sum of its proper divisors (920220867).

1685712573 is a wasteful number, since it uses less digits than its factorization.

1685712573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714545 (or 2714539 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 1685712573 is about 41057.4301801757. The cubic root of 1685712573 is about 1190.1302903267.

The spelling of 1685712573 in words is "one billion, six hundred eighty-five million, seven hundred twelve thousand, five hundred seventy-three".