1171323664 has 80 divisors (see below), whose sum is σ = 2773858176. Its totient is φ = 467712000.

The previous prime is 1171323653. The next prime is 1171323677. The reversal of 1171323664 is 4663231711.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189259 + ... + 195349.

Almost surely, 2^1171323664 is an apocalyptic number.

1171323664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1171323664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386929088).

1171323664 is an abundant number, since it is smaller than the sum of its proper divisors (1602534512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171323664 is a wasteful number, since it uses less digits than its factorization.

1171323664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224 (or 6218 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 1171323664 is about 34224.6061189899. The cubic root of 1171323664 is about 1054.1254670986.

The spelling of 1171323664 in words is "one billion, one hundred seventy-one million, three hundred twenty-three thousand, six hundred sixty-four".