1156664223 has 72 divisors (see below), whose sum is σ = 1988653680. Its totient is φ = 642170880.

The previous prime is 1156664189. The next prime is 1156664233. The reversal of 1156664223 is 3224666511.

It is not a de Polignac number, because 1156664223 - 2⁸ = 1156663967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156664233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4299733 + ... + 4300001.

It is an arithmetic number, because the mean of its divisors is an integer number (27620190).

Almost surely, 2^1156664223 is an apocalyptic number.

1156664223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1156664223 is a deficient number, since it is larger than the sum of its proper divisors (831989457).

1156664223 is a wasteful number, since it uses less digits than its factorization.

1156664223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 553 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1156664223 is about 34009.7665825568. The cubic root of 1156664223 is about 1049.7094352462.

The spelling of 1156664223 in words is "one billion, one hundred fifty-six million, six hundred sixty-four thousand, two hundred twenty-three".