988666537 has 2 divisors, whose sum is σ = 988666538. Its totient is φ = 988666536.

The previous prime is 988666531. The next prime is 988666541. The reversal of 988666537 is 735666889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624200256 + 364466281 = 24984^2 + 19091^2 .

It is a cyclic number.

It is not a de Polignac number, because 988666537 - 2¹⁹ = 988142249 is a prime.

It is not a weakly prime, because it can be changed into another prime (988666531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494333268 + 494333269.

It is an arithmetic number, because the mean of its divisors is an integer number (494333269).

Almost surely, 2^988666537 is an apocalyptic number.

It is an amenable number.

988666537 is a deficient number, since it is larger than the sum of its proper divisors (1).

988666537 is an equidigital number, since it uses as much as digits as its factorization.

988666537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The square root of 988666537 is about 31443.0681868039. The cubic root of 988666537 is about 996.2078165225.

The spelling of 988666537 in words is "nine hundred eighty-eight million, six hundred sixty-six thousand, five hundred thirty-seven".