988666539 has 64 divisors (see below), whose sum is σ = 1662812160. Its totient is φ = 509794560.

The previous prime is 988666537. The next prime is 988666541. The reversal of 988666539 is 935666889.

It is an interprime number because it is at equal distance from previous prime (988666537) and next prime (988666541).

It is not a de Polignac number, because 988666539 - 2¹ = 988666537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (988666531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 828127 + ... + 829319.

It is an arithmetic number, because the mean of its divisors is an integer number (25981440).

Almost surely, 2^988666539 is an apocalyptic number.

988666539 is a deficient number, since it is larger than the sum of its proper divisors (674145621).

988666539 is a wasteful number, since it uses less digits than its factorization.

988666539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its digits is 16796160, while the sum is 60.

The square root of 988666539 is about 31443.0682186074. The cubic root of 988666539 is about 996.2078171943.

The spelling of 988666539 in words is "nine hundred eighty-eight million, six hundred sixty-six thousand, five hundred thirty-nine".