1660713573 has 16 divisors (see below), whose sum is σ = 2246616320. Its totient is φ = 1091208672.

The previous prime is 1660713559. The next prime is 1660713583. The reversal of 1660713573 is 3753170661.

It is not a de Polignac number, because 1660713573 - 2¹⁰ = 1660712549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660713583) 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, 1166340 + ... + 1167762.

It is an arithmetic number, because the mean of its divisors is an integer number (140413520).

Almost surely, 2^1660713573 is an apocalyptic number.

It is an amenable number.

1660713573 is a deficient number, since it is larger than the sum of its proper divisors (585902747).

1660713573 is an frugal number, since it uses more digits than its factorization.

1660713573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 1660713573 is about 40751.8536142836. The cubic root of 1660713573 is about 1184.2177828347.

The spelling of 1660713573 in words is "one billion, six hundred sixty million, seven hundred thirteen thousand, five hundred seventy-three".