82689859 has 16 divisors (see below), whose sum is σ = 96610048. Its totient is φ = 69312672.

The previous prime is 82689833. The next prime is 82689863. The reversal of 82689859 is 95898628.

It is a cyclic number.

It is not a de Polignac number, because 82689859 - 2¹¹ = 82687811 is a prime.

It is a super-2 number, since 2×82689859² = 13675225562879762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82689869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73072 + ... + 74194.

It is an arithmetic number, because the mean of its divisors is an integer number (6038128).

Almost surely, 2^82689859 is an apocalyptic number.

82689859 is a deficient number, since it is larger than the sum of its proper divisors (13920189).

82689859 is a wasteful number, since it uses less digits than its factorization.

82689859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354.

The product of its digits is 2488320, while the sum is 55.

The square root of 82689859 is about 9093.3964501720. The cubic root of 82689859 is about 435.6630729637.

The spelling of 82689859 in words is "eighty-two million, six hundred eighty-nine thousand, eight hundred fifty-nine".