988877761 has 2 divisors, whose sum is σ = 988877762. Its totient is φ = 988877760.

The previous prime is 988877741. The next prime is 988877797. The reversal of 988877761 is 167778889.

988877761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978438400 + 10439361 = 31280^2 + 3231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988877761 is a prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 988877761.

It is not a weakly prime, because it can be changed into another prime (988877741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494438880 + 494438881.

It is an arithmetic number, because the mean of its divisors is an integer number (494438881).

Almost surely, 2^988877761 is an apocalyptic number.

It is an amenable number.

988877761 is a deficient number, since it is larger than the sum of its proper divisors (1).

988877761 is an equidigital number, since it uses as much as digits as its factorization.

988877761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 61.

The square root of 988877761 is about 31446.4268399448. The cubic root of 988877761 is about 996.2787565238.

The spelling of 988877761 in words is "nine hundred eighty-eight million, eight hundred seventy-seven thousand, seven hundred sixty-one".