80608561 has 4 divisors (see below), whose sum is σ = 87936624. Its totient is φ = 73280500.

The previous prime is 80608559. The next prime is 80608589. The reversal of 80608561 is 16580608.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80608561 - 2¹ = 80608559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80609561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3664015 + ... + 3664036.

It is an arithmetic number, because the mean of its divisors is an integer number (21984156).

Almost surely, 2^80608561 is an apocalyptic number.

It is an amenable number.

80608561 is a deficient number, since it is larger than the sum of its proper divisors (7328063).

80608561 is a wasteful number, since it uses less digits than its factorization.

80608561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7328062.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 80608561 is about 8978.2270521523. The cubic root of 80608561 is about 431.9767666546.

The spelling of 80608561 in words is "eighty million, six hundred eight thousand, five hundred sixty-one".