80655 has 16 divisors (see below), whose sum is σ = 136320. Its totient is φ = 40608.

The previous prime is 80651. The next prime is 80657. The reversal of 80655 is 55608.

80655 = 125² + 126² + ... + 129².

It is a Cunningham number, because it is equal to 284²-1.

It is not a de Polignac number, because 80655 - 2² = 80651 is a prime.

80655 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 80655.

It is not an unprimeable number, because it can be changed into a prime (80651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144 + ... + 426.

It is an arithmetic number, because the mean of its divisors is an integer number (8520).

2⁸⁰⁶⁵⁵ is an apocalyptic number.

80655 is a deficient number, since it is larger than the sum of its proper divisors (55665).

80655 is a wasteful number, since it uses less digits than its factorization.

80655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 80655 is about 283.9982394312. The cubic root of 80655 is about 43.2059705397.

It can be divided in two parts, 806 and 55, that added together give a triangular number (861 = T₄₁).

The spelling of 80655 in words is "eighty thousand, six hundred fifty-five".