80835217 has 4 divisors (see below), whose sum is σ = 80949940. Its totient is φ = 80720496.

The previous prime is 80835199. The next prime is 80835233. The reversal of 80835217 is 71253808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6599761 + 74235456 = 2569^2 + 8616^2 .

It is a cyclic number.

It is not a de Polignac number, because 80835217 - 2⁷ = 80835089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80835247) 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, 56298 + ... + 57715.

It is an arithmetic number, because the mean of its divisors is an integer number (20237485).

Almost surely, 2^80835217 is an apocalyptic number.

It is an amenable number.

80835217 is a deficient number, since it is larger than the sum of its proper divisors (114723).

80835217 is a wasteful number, since it uses less digits than its factorization.

80835217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114722.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 80835217 is about 8990.8407282078. The cubic root of 80835217 is about 432.3812667046.

The spelling of 80835217 in words is "eighty million, eight hundred thirty-five thousand, two hundred seventeen".