1660655113 has 8 divisors (see below), whose sum is σ = 1788715656. Its totient is φ = 1532640000.

The previous prime is 1660655111. The next prime is 1660655147. The reversal of 1660655113 is 3115560661.

It can be written as a sum of positive squares in 4 ways, for example, as 286692624 + 1373962489 = 16932^2 + 37067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1660655113 - 2¹ = 1660655111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1660655111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127713 + ... + 140113.

It is an arithmetic number, because the mean of its divisors is an integer number (223589457).

Almost surely, 2^1660655113 is an apocalyptic number.

1660655113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1660655113 is a deficient number, since it is larger than the sum of its proper divisors (128060543).

1660655113 is a wasteful number, since it uses less digits than its factorization.

1660655113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22715.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 1660655113 is about 40751.1363399844. The cubic root of 1660655113 is about 1184.2038871646.

The spelling of 1660655113 in words is "one billion, six hundred sixty million, six hundred fifty-five thousand, one hundred thirteen".