663982537 has 2 divisors, whose sum is σ = 663982538. Its totient is φ = 663982536.

The previous prime is 663982513. The next prime is 663982541. The reversal of 663982537 is 735289366.

It is a happy number.

663982537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628805776 + 35176761 = 25076^2 + 5931^2 .

It is a cyclic number.

It is not a de Polignac number, because 663982537 - 2¹¹ = 663980489 is a prime.

It is not a weakly prime, because it can be changed into another prime (663982507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331991268 + 331991269.

It is an arithmetic number, because the mean of its divisors is an integer number (331991269).

Almost surely, 2^663982537 is an apocalyptic number.

It is an amenable number.

663982537 is a deficient number, since it is larger than the sum of its proper divisors (1).

663982537 is an equidigital number, since it uses as much as digits as its factorization.

663982537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The square root of 663982537 is about 25767.8586033066. The cubic root of 663982537 is about 872.4064861476.

The spelling of 663982537 in words is "six hundred sixty-three million, nine hundred eighty-two thousand, five hundred thirty-seven".