76308321 has 8 divisors (see below), whose sum is σ = 101787264. Its totient is φ = 50850800.

The previous prime is 76308317. The next prime is 76308347. The reversal of 76308321 is 12380367.

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 76308321 - 2² = 76308317 is a prime.

It is a super-3 number, since 3×76308321³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76308301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7096 + ... + 14246.

It is an arithmetic number, because the mean of its divisors is an integer number (12723408).

Almost surely, 2^76308321 is an apocalyptic number.

It is an amenable number.

76308321 is a deficient number, since it is larger than the sum of its proper divisors (25478943).

76308321 is a wasteful number, since it uses less digits than its factorization.

76308321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 76308321 is about 8735.4634107184. The cubic root of 76308321 is about 424.1543896788.

Adding to 76308321 its reverse (12380367), we get a palindrome (88688688).

It can be divided in two parts, 7630 and 8321, that added together give a palindrome (15951).

The spelling of 76308321 in words is "seventy-six million, three hundred eight thousand, three hundred twenty-one".