80611603 has 4 divisors (see below), whose sum is σ = 85353480. Its totient is φ = 75869728.

The previous prime is 80611591. The next prime is 80611607. The reversal of 80611603 is 30611608.

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 80611603 - 2²¹ = 78514451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80611607) 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 3 ways as a sum of consecutive naturals, for example, 2370913 + ... + 2370946.

It is an arithmetic number, because the mean of its divisors is an integer number (21338370).

Almost surely, 2^80611603 is an apocalyptic number.

80611603 is a deficient number, since it is larger than the sum of its proper divisors (4741877).

80611603 is a wasteful number, since it uses less digits than its factorization.

80611603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741876.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 80611603 is about 8978.3964603931. The cubic root of 80611603 is about 431.9822005555.

The spelling of 80611603 in words is "eighty million, six hundred eleven thousand, six hundred three".