82098861 has 16 divisors (see below), whose sum is σ = 118286784. Its totient is φ = 50350464.

The previous prime is 82098857. The next prime is 82098917. The reversal of 82098861 is 16889028.

It is not a de Polignac number, because 82098861 - 2² = 82098857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82098461) 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, 8545 + ... + 15401.

It is an arithmetic number, because the mean of its divisors is an integer number (7392924).

Almost surely, 2^82098861 is an apocalyptic number.

It is an amenable number.

82098861 is a deficient number, since it is larger than the sum of its proper divisors (36187923).

82098861 is a wasteful number, since it uses less digits than its factorization.

82098861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 82098861 is about 9060.8421794003. The cubic root of 82098861 is about 434.6226718675.

It can be divided in two parts, 820 and 98861, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 82098861 in words is "eighty-two million, ninety-eight thousand, eight hundred sixty-one".