1000126663 has 4 divisors (see below), whose sum is σ = 1000196080. Its totient is φ = 1000057248.

The previous prime is 1000126657. The next prime is 1000126691. The reversal of 1000126663 is 3666210001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3666210001 = 39439 ⋅92959.

It is a cyclic number.

It is not a de Polignac number, because 1000126663 - 2²⁵ = 966572231 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 (1000106663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4098 + ... + 44911.

It is an arithmetic number, because the mean of its divisors is an integer number (250049020).

Almost surely, 2^1000126663 is an apocalyptic number.

1000126663 is a deficient number, since it is larger than the sum of its proper divisors (69417).

1000126663 is an equidigital number, since it uses as much as digits as its factorization.

1000126663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69416.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1000126663 is about 31624.7792561466. The cubic root of 1000126663 is about 1000.0422192175.

Adding to 1000126663 its reverse (3666210001), we get a palindrome (4666336664).

The spelling of 1000126663 in words is "one billion, one hundred twenty-six thousand, six hundred sixty-three".