988720571 has 2 divisors, whose sum is σ = 988720572. Its totient is φ = 988720570.

The previous prime is 988720567. The next prime is 988720583. The reversal of 988720571 is 175027889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 988720571 - 2² = 988720567 is a prime.

It is not a weakly prime, because it can be changed into another prime (988725571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494360285 + 494360286.

It is an arithmetic number, because the mean of its divisors is an integer number (494360286).

Almost surely, 2^988720571 is an apocalyptic number.

988720571 is a deficient number, since it is larger than the sum of its proper divisors (1).

988720571 is an equidigital number, since it uses as much as digits as its factorization.

988720571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 988720571 is about 31443.9274105510. The cubic root of 988720571 is about 996.2259649108.

The spelling of 988720571 in words is "nine hundred eighty-eight million, seven hundred twenty thousand, five hundred seventy-one".