1294996663 has 2 divisors, whose sum is σ = 1294996664. Its totient is φ = 1294996662.

The previous prime is 1294996631. The next prime is 1294996667. The reversal of 1294996663 is 3666994921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1294996663 - 2⁵ = 1294996631 is a prime.

It is a super-2 number, since 2×1294996663² = 3354032714362271138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294996667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647498331 + 647498332.

It is an arithmetic number, because the mean of its divisors is an integer number (647498332).

Almost surely, 2^1294996663 is an apocalyptic number.

1294996663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294996663 is an equidigital number, since it uses as much as digits as its factorization.

1294996663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 55.

The square root of 1294996663 is about 35986.0620657498. The cubic root of 1294996663 is about 1089.9909274558.

The spelling of 1294996663 in words is "one billion, two hundred ninety-four million, nine hundred ninety-six thousand, six hundred sixty-three".