663213053 has 2 divisors, whose sum is σ = 663213054. Its totient is φ = 663213052.

The previous prime is 663213029. The next prime is 663213097. The reversal of 663213053 is 350312366.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659359684 + 3853369 = 25678^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 663213053 - 2²⁴ = 646435837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663213013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331606526 + 331606527.

It is an arithmetic number, because the mean of its divisors is an integer number (331606527).

Almost surely, 2^663213053 is an apocalyptic number.

It is an amenable number.

663213053 is a deficient number, since it is larger than the sum of its proper divisors (1).

663213053 is an equidigital number, since it uses as much as digits as its factorization.

663213053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 663213053 is about 25752.9231932998. The cubic root of 663213053 is about 872.0693476012.

The spelling of 663213053 in words is "six hundred sixty-three million, two hundred thirteen thousand, fifty-three".