1000660663 has 2 divisors, whose sum is σ = 1000660664. Its totient is φ = 1000660662.

The previous prime is 1000660649. The next prime is 1000660693. The reversal of 1000660663 is 3660660001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000660663 - 2²⁹ = 463789751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000660693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500330331 + 500330332.

It is an arithmetic number, because the mean of its divisors is an integer number (500330332).

Almost surely, 2^1000660663 is an apocalyptic number.

1000660663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000660663 is an equidigital number, since it uses as much as digits as its factorization.

1000660663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1000660663 is about 31633.2208761612. The cubic root of 1000660663 is about 1000.2201725205.

The spelling of 1000660663 in words is "one billion, six hundred sixty thousand, six hundred sixty-three".