1660087361 has 8 divisors (see below), whose sum is σ = 1748414880. Its totient is φ = 1571855328.

The previous prime is 1660087343. The next prime is 1660087393. The reversal of 1660087361 is 1637800661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660087361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1660087301) 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, 13325 + ... + 59141.

It is an arithmetic number, because the mean of its divisors is an integer number (218551860).

Almost surely, 2^1660087361 is an apocalyptic number.

It is an amenable number.

1660087361 is a deficient number, since it is larger than the sum of its proper divisors (88327519).

1660087361 is a wasteful number, since it uses less digits than its factorization.

1660087361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47743.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1660087361 is about 40744.1696565288. The cubic root of 1660087361 is about 1184.0689181886.

The spelling of 1660087361 in words is "one billion, six hundred sixty million, eighty-seven thousand, three hundred sixty-one".