321368769 has 32 divisors (see below), whose sum is σ = 484116480. Its totient is φ = 210672000.

The previous prime is 321368767. The next prime is 321368771. The reversal of 321368769 is 967863123.

It is an interprime number because it is at equal distance from previous prime (321368767) and next prime (321368771).

It is not a de Polignac number, because 321368769 - 2¹ = 321368767 is a prime.

It is a super-2 number, since 2×321368769² = 206555771377150722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321368767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520549 + ... + 521165.

It is an arithmetic number, because the mean of its divisors is an integer number (15128640).

Almost surely, 2^321368769 is an apocalyptic number.

It is an amenable number.

321368769 is a deficient number, since it is larger than the sum of its proper divisors (162747711).

321368769 is a wasteful number, since it uses less digits than its factorization.

321368769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 912 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 321368769 is about 17926.7612523847. The cubic root of 321368769 is about 684.9642256700.

The spelling of 321368769 in words is "three hundred twenty-one million, three hundred sixty-eight thousand, seven hundred sixty-nine".