79805603 has 2 divisors, whose sum is σ = 79805604. Its totient is φ = 79805602.

The previous prime is 79805597. The next prime is 79805647. The reversal of 79805603 is 30650897.

It is a weak prime.

It is an emirp because it is prime and its reverse (30650897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79805603 - 2⁴ = 79805587 is a prime.

It is not a weakly prime, because it can be changed into another prime (79805903) 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 as a sum of consecutive naturals, namely, 39902801 + 39902802.

It is an arithmetic number, because the mean of its divisors is an integer number (39902802).

Almost surely, 2^79805603 is an apocalyptic number.

79805603 is a deficient number, since it is larger than the sum of its proper divisors (1).

79805603 is an equidigital number, since it uses as much as digits as its factorization.

79805603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 79805603 is about 8933.3981776254. The cubic root of 79805603 is about 430.5376418942.

It can be divided in two parts, 79805 and 603, that added together give a palindrome (80408).

The spelling of 79805603 in words is "seventy-nine million, eight hundred five thousand, six hundred three".