1323680669 has 8 divisors (see below), whose sum is σ = 1369952760. Its totient is φ = 1277450496.

The previous prime is 1323680641. The next prime is 1323680681. The reversal of 1323680669 is 9660863231.

It can be written as a sum of positive squares in 4 ways, for example, as 494528644 + 829152025 = 22238^2 + 28795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323680669 - 2¹⁶ = 1323615133 is a prime.

It is a super-2 number, since 2×1323680669² = 3504261026968575122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323686669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62489 + ... + 80945.

It is an arithmetic number, because the mean of its divisors is an integer number (171244095).

Almost surely, 2^1323680669 is an apocalyptic number.

It is an amenable number.

1323680669 is a deficient number, since it is larger than the sum of its proper divisors (46272091).

1323680669 is a wasteful number, since it uses less digits than its factorization.

1323680669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20959.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 1323680669 is about 36382.4225279186. The cubic root of 1323680669 is about 1097.9799479972.

The spelling of 1323680669 in words is "one billion, three hundred twenty-three million, six hundred eighty thousand, six hundred sixty-nine".