988956566 has 24 divisors (see below), whose sum is σ = 1612860984. Its totient is φ = 454584000.

The previous prime is 988956559. The next prime is 988956587. The reversal of 988956566 is 665659889.

It is a junction number, because it is equal to n+sod(n) for n = 988956499 and 988956508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79010 + ... + 90666.

It is an arithmetic number, because the mean of its divisors is an integer number (67202541).

Almost surely, 2^988956566 is an apocalyptic number.

988956566 is a deficient number, since it is larger than the sum of its proper divisors (623904418).

988956566 is a wasteful number, since it uses less digits than its factorization.

988956566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11936 (or 11923 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 62.

The square root of 988956566 is about 31447.6798190264. The cubic root of 988956566 is about 996.3052207526.

The spelling of 988956566 in words is "nine hundred eighty-eight million, nine hundred fifty-six thousand, five hundred sixty-six".