663246049 has 2 divisors, whose sum is σ = 663246050. Its totient is φ = 663246048.

The previous prime is 663246013. The next prime is 663246113. The reversal of 663246049 is 940642366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595018449 + 68227600 = 24393^2 + 8260^2 .

It is a cyclic number.

It is not a de Polignac number, because 663246049 - 2⁹ = 663245537 is a prime.

It is a super-2 number, since 2×663246049² = 879790643028220802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (663247049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331623024 + 331623025.

It is an arithmetic number, because the mean of its divisors is an integer number (331623025).

Almost surely, 2^663246049 is an apocalyptic number.

It is an amenable number.

663246049 is a deficient number, since it is larger than the sum of its proper divisors (1).

663246049 is an equidigital number, since it uses as much as digits as its factorization.

663246049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 663246049 is about 25753.5638116359. The cubic root of 663246049 is about 872.0838096823.

The spelling of 663246049 in words is "six hundred sixty-three million, two hundred forty-six thousand, forty-nine".