1660887253 has 8 divisors (see below), whose sum is σ = 1678826240. Its totient is φ = 1642965120.

The previous prime is 1660887251. The next prime is 1660887259. The reversal of 1660887253 is 3527880661.

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 1660887253 - 2¹ = 1660887251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660887251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355708 + ... + 360346.

It is an arithmetic number, because the mean of its divisors is an integer number (209853280).

Almost surely, 2^1660887253 is an apocalyptic number.

It is an amenable number.

1660887253 is a deficient number, since it is larger than the sum of its proper divisors (17938987).

1660887253 is an equidigital number, since it uses as much as digits as its factorization.

1660887253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 1660887253 is about 40753.9845045856. The cubic root of 1660887253 is about 1184.2590638395.

The spelling of 1660887253 in words is "one billion, six hundred sixty million, eight hundred eighty-seven thousand, two hundred fifty-three".