80655579 has 6 divisors (see below), whose sum is σ = 116502516. Its totient is φ = 53770380.

The previous prime is 80655571. The next prime is 80655611. The reversal of 80655579 is 97555608.

It is not a de Polignac number, because 80655579 - 2³ = 80655571 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 4480857 + ... + 4480874.

It is an arithmetic number, because the mean of its divisors is an integer number (19417086).

Almost surely, 2^80655579 is an apocalyptic number.

80655579 is a deficient number, since it is larger than the sum of its proper divisors (35846937).

80655579 is a wasteful number, since it uses less digits than its factorization.

80655579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8961737 (or 8961734 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 80655579 is about 8980.8451161347. The cubic root of 80655579 is about 432.0607392734.

The spelling of 80655579 in words is "eighty million, six hundred fifty-five thousand, five hundred seventy-nine".