324736397 has 16 divisors (see below), whose sum is σ = 349343280. Its totient is φ = 300782592.

The previous prime is 324736393. The next prime is 324736409. The reversal of 324736397 is 793637423.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4541161 + 320195236 = 2131^2 + 17894^2 .

It is a cyclic number.

It is not a de Polignac number, because 324736397 - 2² = 324736393 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 (324736393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320063 + ... + 321075.

It is an arithmetic number, because the mean of its divisors is an integer number (21833955).

Almost surely, 2^324736397 is an apocalyptic number.

It is an amenable number.

324736397 is a deficient number, since it is larger than the sum of its proper divisors (24606883).

324736397 is a wasteful number, since it uses less digits than its factorization.

324736397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its digits is 571536, while the sum is 44.

The square root of 324736397 is about 18020.4438624580. The cubic root of 324736397 is about 687.3485000389.

The spelling of 324736397 in words is "three hundred twenty-four million, seven hundred thirty-six thousand, three hundred ninety-seven".