82098505 has 4 divisors (see below), whose sum is σ = 98518212. Its totient is φ = 65678800.

The previous prime is 82098493. The next prime is 82098521. The reversal of 82098505 is 50589028.

It is a happy number.

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 11269449 + 70829056 = 3357^2 + 8416^2 .

It is not a de Polignac number, because 82098505 - 2⁷ = 82098377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8209846 + ... + 8209855.

It is an arithmetic number, because the mean of its divisors is an integer number (24629553).

Almost surely, 2^82098505 is an apocalyptic number.

It is an amenable number.

82098505 is a deficient number, since it is larger than the sum of its proper divisors (16419707).

82098505 is a wasteful number, since it uses less digits than its factorization.

82098505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16419706.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 82098505 is about 9060.8225344060. The cubic root of 82098505 is about 434.6220436578.

The spelling of 82098505 in words is "eighty-two million, ninety-eight thousand, five hundred five".