80655577 has 4 divisors (see below), whose sum is σ = 80680320. Its totient is φ = 80630836.

The previous prime is 80655571. The next prime is 80655611. The reversal of 80655577 is 77555608.

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 80655577 - 2¹⁵ = 80622809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80655571) 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, 6577 + ... + 14302.

It is an arithmetic number, because the mean of its divisors is an integer number (20170080).

Almost surely, 2^80655577 is an apocalyptic number.

It is an amenable number.

80655577 is a deficient number, since it is larger than the sum of its proper divisors (24743).

80655577 is a wasteful number, since it uses less digits than its factorization.

80655577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24742.

The product of its (nonzero) digits is 294000, while the sum is 43.

The square root of 80655577 is about 8980.8450047866. The cubic root of 80655577 is about 432.0607357022.

The spelling of 80655577 in words is "eighty million, six hundred fifty-five thousand, five hundred seventy-seven".