1668687027 has 16 divisors (see below), whose sum is σ = 2676591360. Its totient is φ = 903349152.

The previous prime is 1668687019. The next prime is 1668687043. The reversal of 1668687027 is 7207868661.

1668687027 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1668687027 - 2³ = 1668687019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1668687017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2090688 + ... + 2091485.

It is an arithmetic number, because the mean of its divisors is an integer number (167286960).

Almost surely, 2^1668687027 is an apocalyptic number.

1668687027 is a deficient number, since it is larger than the sum of its proper divisors (1007904333).

1668687027 is a wasteful number, since it uses less digits than its factorization.

1668687027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182202.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 1668687027 is about 40849.5658116460. The cubic root of 1668687027 is about 1186.1099884534.

The spelling of 1668687027 in words is "one billion, six hundred sixty-eight million, six hundred eighty-seven thousand, twenty-seven".