1660207056 has 20 divisors (see below), whose sum is σ = 4288868352. Its totient is φ = 553402336.

The previous prime is 1660207039. The next prime is 1660207067. The reversal of 1660207056 is 6507020661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17293776 + ... + 17293871.

Almost surely, 2^1660207056 is an apocalyptic number.

1660207056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1660207056 is an abundant number, since it is smaller than the sum of its proper divisors (2628661296).

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

1660207056 is a wasteful number, since it uses less digits than its factorization.

1660207056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34587658 (or 34587652 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1660207056 is about 40745.6384905182. The cubic root of 1660207056 is about 1184.0973752699.

The spelling of 1660207056 in words is "one billion, six hundred sixty million, two hundred seven thousand, fifty-six".