971798699 has 2 divisors, whose sum is σ = 971798700. Its totient is φ = 971798698.

The previous prime is 971798657. The next prime is 971798701. The reversal of 971798699 is 996897179.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 971798699 - 2¹⁶ = 971733163 is a prime.

It is a super-2 number, since 2×971798699² = 1888785422756185202, which contains 22 as substring.

Together with 971798701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (971798629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485899349 + 485899350.

It is an arithmetic number, because the mean of its divisors is an integer number (485899350).

Almost surely, 2^971798699 is an apocalyptic number.

971798699 is a deficient number, since it is larger than the sum of its proper divisors (1).

971798699 is an equidigital number, since it uses as much as digits as its factorization.

971798699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 65.

The square root of 971798699 is about 31173.6860027813. The cubic root of 971798699 is about 990.5097871018.

The spelling of 971798699 in words is "nine hundred seventy-one million, seven hundred ninety-eight thousand, six hundred ninety-nine".