1663708675 has 6 divisors (see below), whose sum is σ = 2062998788. Its totient is φ = 1330966920.

The previous prime is 1663708643. The next prime is 1663708699. The reversal of 1663708675 is 5768073661.

It is not a de Polignac number, because 1663708675 - 2⁵ = 1663708643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33274149 + ... + 33274198.

Almost surely, 2^1663708675 is an apocalyptic number.

1663708675 is a deficient number, since it is larger than the sum of its proper divisors (399290113).

1663708675 is an equidigital number, since it uses as much as digits as its factorization.

1663708675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66548357 (or 66548352 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 1663708675 is about 40788.5851066202. The cubic root of 1663708675 is about 1184.9292687461.

The spelling of 1663708675 in words is "one billion, six hundred sixty-three million, seven hundred eight thousand, six hundred seventy-five".