988686701 has 2 divisors, whose sum is σ = 988686702. Its totient is φ = 988686700.

The previous prime is 988686599. The next prime is 988686703. The reversal of 988686701 is 107686889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 981255625 + 7431076 = 31325^2 + 2726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988686701 is a prime.

It is a Sophie Germain prime.

Together with 988686703, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988686703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494343350 + 494343351.

It is an arithmetic number, because the mean of its divisors is an integer number (494343351).

Almost surely, 2^988686701 is an apocalyptic number.

It is an amenable number.

988686701 is a deficient number, since it is larger than the sum of its proper divisors (1).

988686701 is an equidigital number, since it uses as much as digits as its factorization.

988686701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 988686701 is about 31443.3888281782. The cubic root of 988686701 is about 996.2145890783.

The spelling of 988686701 in words is "nine hundred eighty-eight million, six hundred eighty-six thousand, seven hundred one".