76718321 has 8 divisors (see below), whose sum is σ = 78666720. Its totient is φ = 74777472.

The previous prime is 76718261. The next prime is 76718351. The reversal of 76718321 is 12381767.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76718321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76718351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22625 + ... + 25793.

It is an arithmetic number, because the mean of its divisors is an integer number (9833340).

Almost surely, 2^76718321 is an apocalyptic number.

It is an amenable number.

76718321 is a deficient number, since it is larger than the sum of its proper divisors (1948399).

76718321 is a wasteful number, since it uses less digits than its factorization.

76718321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775.

The product of its digits is 14112, while the sum is 35.

The square root of 76718321 is about 8758.8995313338. The cubic root of 76718321 is about 424.9126851769.

The spelling of 76718321 in words is "seventy-six million, seven hundred eighteen thousand, three hundred twenty-one".