1668896087 has 2 divisors, whose sum is σ = 1668896088. Its totient is φ = 1668896086.

The previous prime is 1668896083. The next prime is 1668896149. The reversal of 1668896087 is 7806988661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1668896087 - 2² = 1668896083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1668896083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834448043 + 834448044.

It is an arithmetic number, because the mean of its divisors is an integer number (834448044).

Almost surely, 2^1668896087 is an apocalyptic number.

1668896087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668896087 is an equidigital number, since it uses as much as digits as its factorization.

1668896087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 1668896087 is about 40852.1246326308. The cubic root of 1668896087 is about 1186.1595199704.

The spelling of 1668896087 in words is "one billion, six hundred sixty-eight million, eight hundred ninety-six thousand, eighty-seven".