80517605 has 16 divisors (see below), whose sum is σ = 110605824. Its totient is φ = 55121280.

The previous prime is 80517539. The next prime is 80517691. The reversal of 80517605 is 50671508.

It is not a de Polignac number, because 80517605 - 2¹⁰ = 80516581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25124 + ... + 28146.

It is an arithmetic number, because the mean of its divisors is an integer number (6912864).

Almost surely, 2^80517605 is an apocalyptic number.

It is an amenable number.

80517605 is a deficient number, since it is larger than the sum of its proper divisors (30088219).

80517605 is a wasteful number, since it uses less digits than its factorization.

80517605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 80517605 is about 8973.1602571223. The cubic root of 80517605 is about 431.8142294677.

The spelling of 80517605 in words is "eighty million, five hundred seventeen thousand, six hundred five".