1171406647 has 2 divisors, whose sum is σ = 1171406648. Its totient is φ = 1171406646.

The previous prime is 1171406633. The next prime is 1171406651. The reversal of 1171406647 is 7466041711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171406647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171407647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585703323 + 585703324.

It is an arithmetic number, because the mean of its divisors is an integer number (585703324).

Almost surely, 2^1171406647 is an apocalyptic number.

1171406647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171406647 is an equidigital number, since it uses as much as digits as its factorization.

1171406647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1171406647 is about 34225.8184270296. The cubic root of 1171406647 is about 1054.1503598561.

The spelling of 1171406647 in words is "one billion, one hundred seventy-one million, four hundred six thousand, six hundred forty-seven".