663024997 has 2 divisors, whose sum is σ = 663024998. Its totient is φ = 663024996.

The previous prime is 663024983. The next prime is 663025021. The reversal of 663024997 is 799420366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558187876 + 104837121 = 23626^2 + 10239^2 .

It is a cyclic number.

It is not a de Polignac number, because 663024997 - 2¹¹ = 663022949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663024907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331512498 + 331512499.

It is an arithmetic number, because the mean of its divisors is an integer number (331512499).

Almost surely, 2^663024997 is an apocalyptic number.

It is an amenable number.

663024997 is a deficient number, since it is larger than the sum of its proper divisors (1).

663024997 is an equidigital number, since it uses as much as digits as its factorization.

663024997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 663024997 is about 25749.2717761105. The cubic root of 663024997 is about 871.9869138716.

The spelling of 663024997 in words is "six hundred sixty-three million, twenty-four thousand, nine hundred ninety-seven".