1171232647 has 4 divisors (see below), whose sum is σ = 1261327480. Its totient is φ = 1081137816.

The previous prime is 1171232603. The next prime is 1171232651. The reversal of 1171232647 is 7462321711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1171232647 - 2¹⁹ = 1170708359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171232747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45047397 + ... + 45047422.

It is an arithmetic number, because the mean of its divisors is an integer number (315331870).

Almost surely, 2^1171232647 is an apocalyptic number.

1171232647 is a deficient number, since it is larger than the sum of its proper divisors (90094833).

1171232647 is an equidigital number, since it uses as much as digits as its factorization.

1171232647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90094832.

The product of its digits is 14112, while the sum is 34.

The square root of 1171232647 is about 34223.2763919529. The cubic root of 1171232647 is about 1054.0981629965.

The spelling of 1171232647 in words is "one billion, one hundred seventy-one million, two hundred thirty-two thousand, six hundred forty-seven".