79216601 has 2 divisors, whose sum is σ = 79216602. Its totient is φ = 79216600.

The previous prime is 79216591. The next prime is 79216619. The reversal of 79216601 is 10661297.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 34527376 = 6685^2 + 5876^2 .

It is an emirp because it is prime and its reverse (10661297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79216601 - 2⁶ = 79216537 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79216201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39608300 + 39608301.

It is an arithmetic number, because the mean of its divisors is an integer number (39608301).

Almost surely, 2^79216601 is an apocalyptic number.

It is an amenable number.

79216601 is a deficient number, since it is larger than the sum of its proper divisors (1).

79216601 is an equidigital number, since it uses as much as digits as its factorization.

79216601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 79216601 is about 8900.3708349709. The cubic root of 79216601 is about 429.4758368856.

Adding to 79216601 its reverse (10661297), we get a palindrome (89877898).

The spelling of 79216601 in words is "seventy-nine million, two hundred sixteen thousand, six hundred one".