79791603 has 4 divisors (see below), whose sum is σ = 106388808. Its totient is φ = 53194400.

The previous prime is 79791581. The next prime is 79791619. The reversal of 79791603 is 30619797.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79791603 - 2⁹ = 79791091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79791683) 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 3 ways as a sum of consecutive naturals, for example, 13298598 + ... + 13298603.

It is an arithmetic number, because the mean of its divisors is an integer number (26597202).

Almost surely, 2^79791603 is an apocalyptic number.

79791603 is a deficient number, since it is larger than the sum of its proper divisors (26597205).

79791603 is a wasteful number, since it uses less digits than its factorization.

79791603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26597204.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 79791603 is about 8932.6145668556. The cubic root of 79791603 is about 430.5124645497.

The spelling of 79791603 in words is "seventy-nine million, seven hundred ninety-one thousand, six hundred three".